cpython-lru_cache-weakref: Modules/_randommodule.c annotate

annotate Modules/_randommodule.c @ 58925:eecf1bef052d 2.6

Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........

author	Ezio Melotti <ezio.melotti@gmail.com>
date	Tue, 16 Feb 2010 23:29:44 +0000
parents	6d64cd69f384
children	fd25030223b0

rev	line source
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	1 /* Random objects */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	2
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	3 /* ------------------------------------------------------------------
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	4 The code in this module was based on a download from:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	5 http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	6
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	7 It was modified in 2002 by Raymond Hettinger as follows:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	8
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	9 * the principal computational lines untouched except for tabbing.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	10
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	11 * renamed genrand_res53() to random_random() and wrapped
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	12 in python calling/return code.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	13
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	14 * genrand_int32() and the helper functions, init_genrand()
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	15 and init_by_array(), were declared static, wrapped in
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	16 Python calling/return code. also, their global data
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	17 references were replaced with structure references.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	18
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	19 * unused functions from the original were deleted.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	20 new, original C python code was added to implement the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	21 Random() interface.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	22
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	23 The following are the verbatim comments from the original code:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	24
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	25 A C-program for MT19937, with initialization improved 2002/1/26.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	26 Coded by Takuji Nishimura and Makoto Matsumoto.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	27
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	28 Before using, initialize the state by using init_genrand(seed)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	29 or init_by_array(init_key, key_length).
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	30
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	31 Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	32 All rights reserved.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	33
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	34 Redistribution and use in source and binary forms, with or without
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	35 modification, are permitted provided that the following conditions
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	36 are met:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	37
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	38 1. Redistributions of source code must retain the above copyright
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	39 notice, this list of conditions and the following disclaimer.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	40
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	41 2. Redistributions in binary form must reproduce the above copyright
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	42 notice, this list of conditions and the following disclaimer in the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	43 documentation and/or other materials provided with the distribution.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	44
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	45 3. The names of its contributors may not be used to endorse or promote
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	46 products derived from this software without specific prior written
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	47 permission.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	48
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	49 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	50 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	51 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	52 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	53 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	54 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	55 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	56 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	57 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	58 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	59 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	60
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	61
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	62 Any feedback is very welcome.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	63 http://www.math.keio.ac.jp/matumoto/emt.html
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	64 email: matumoto@math.keio.ac.jp
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	65 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	66
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	67 /* ---------------------------------------------------------------*/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	68
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	69 #include "Python.h"
28637 acfa0ff8c5a4 Minor source formatting fixes. Raymond Hettinger <python@rcn.com> parents: 27104 diff changeset	70 #include <time.h> /* for seeding to current time */
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	71
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	72 /* Period parameters -- These are all magic. Don't change. */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	73 #define N 624
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	74 #define M 397
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	75 #define MATRIX_A 0x9908b0dfUL /* constant vector a */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	76 #define UPPER_MASK 0x80000000UL /* most significant w-r bits */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	77 #define LOWER_MASK 0x7fffffffUL /* least significant r bits */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	78
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	79 typedef struct {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	80 PyObject_HEAD
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	81 unsigned long state[N];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	82 int index;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	83 } RandomObject;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	84
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	85 static PyTypeObject Random_Type;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	86
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44122 diff changeset	87 #define RandomObject_Check(v) (Py_TYPE(v) == &Random_Type)
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	88
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	89
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	90 /* Random methods */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	91
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	92
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	93 /* generates a random number on [0,0xffffffff]-interval */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	94 static unsigned long
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	95 genrand_int32(RandomObject *self)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	96 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	97 unsigned long y;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	98 static unsigned long mag01[2]={0x0UL, MATRIX_A};
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	99 /* mag01[x] = x * MATRIX_A for x=0,1 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	100 unsigned long *mt;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	101
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	102 mt = self->state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	103 if (self->index >= N) { /* generate N words at one time */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	104 int kk;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	105
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	106 for (kk=0;kk<N-M;kk++) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	107 y = (mt[kk]&UPPER_MASK)\|(mt[kk+1]&LOWER_MASK);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	108 mt[kk] = mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1UL];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	109 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	110 for (;kk<N-1;kk++) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	111 y = (mt[kk]&UPPER_MASK)\|(mt[kk+1]&LOWER_MASK);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	112 mt[kk] = mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1UL];
28637 acfa0ff8c5a4 Minor source formatting fixes. Raymond Hettinger <python@rcn.com> parents: 27104 diff changeset	113 }
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	114 y = (mt[N-1]&UPPER_MASK)\|(mt[0]&LOWER_MASK);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	115 mt[N-1] = mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1UL];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	116
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	117 self->index = 0;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	118 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	119
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	120 y = mt[self->index++];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	121 y ^= (y >> 11);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	122 y ^= (y << 7) & 0x9d2c5680UL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	123 y ^= (y << 15) & 0xefc60000UL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	124 y ^= (y >> 18);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	125 return y;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	126 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	127
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	128 /* random_random is the function named genrand_res53 in the original code;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	129 * generates a random number on [0,1) with 53-bit resolution; note that
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	130 * 9007199254740992 == 253; I assume they're spelling "/253" as
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	131 * multiply-by-reciprocal in the (likely vain) hope that the compiler will
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	132 * optimize the division away at compile-time. 67108864 is 2**26. In
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	133 * effect, a contains 27 random bits shifted left 26, and b fills in the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	134 * lower 26 bits of the 53-bit numerator.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	135 * The orginal code credited Isaku Wada for this algorithm, 2002/01/09.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	136 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	137 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	138 random_random(RandomObject *self)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	139 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	140 unsigned long a=genrand_int32(self)>>5, b=genrand_int32(self)>>6;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	141 return PyFloat_FromDouble((a67108864.0+b)(1.0/9007199254740992.0));
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	142 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	143
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	144 /* initializes mt[N] with a seed */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	145 static void
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	146 init_genrand(RandomObject *self, unsigned long s)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	147 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	148 int mti;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	149 unsigned long *mt;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	150
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	151 mt = self->state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	152 mt[0]= s & 0xffffffffUL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	153 for (mti=1; mti<N; mti++) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	154 mt[mti] =
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	155 (1812433253UL * (mt[mti-1] ^ (mt[mti-1] >> 30)) + mti);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	156 /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	157 /* In the previous versions, MSBs of the seed affect */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	158 /* only MSBs of the array mt[]. */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	159 /* 2002/01/09 modified by Makoto Matsumoto */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	160 mt[mti] &= 0xffffffffUL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	161 /* for >32 bit machines */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	162 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	163 self->index = mti;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	164 return;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	165 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	166
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	167 /* initialize by an array with array-length */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	168 /* init_key is the array for initializing keys */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	169 /* key_length is its length */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	170 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	171 init_by_array(RandomObject *self, unsigned long init_key[], unsigned long key_length)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	172 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	173 unsigned int i, j, k; /* was signed in the original code. RDH 12/16/2002 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	174 unsigned long *mt;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	175
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	176 mt = self->state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	177 init_genrand(self, 19650218UL);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	178 i=1; j=0;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	179 k = (N>key_length ? N : key_length);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	180 for (; k; k--) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	181 mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1664525UL))
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	182 + init_key[j] + j; /* non linear */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	183 mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	184 i++; j++;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	185 if (i>=N) { mt[0] = mt[N-1]; i=1; }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	186 if (j>=key_length) j=0;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	187 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	188 for (k=N-1; k; k--) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	189 mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1566083941UL))
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	190 - i; /* non linear */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	191 mt[i] &= 0xffffffffUL; /* for WORDSIZE > 32 machines */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	192 i++;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	193 if (i>=N) { mt[0] = mt[N-1]; i=1; }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	194 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	195
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	196 mt[0] = 0x80000000UL; /* MSB is 1; assuring non-zero initial array */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	197 Py_INCREF(Py_None);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	198 return Py_None;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	199 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	200
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	201 /*
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	202 * The rest is Python-specific code, neither part of, nor derived from, the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	203 * Twister download.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	204 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	205
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	206 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	207 random_seed(RandomObject self, PyObject args)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	208 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	209 PyObject result = NULL; / guilty until proved innocent */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	210 PyObject *masklower = NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	211 PyObject *thirtytwo = NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	212 PyObject *n = NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	213 unsigned long *key = NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	214 unsigned long keymax; /* # of allocated slots in key */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	215 unsigned long keyused; /* # of used slots in key */
28734 5c886e03b43e PyObject_IsTrue() can return an error condition. Raymond Hettinger <python@rcn.com> parents: 28637 diff changeset	216 int err;
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	217
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	218 PyObject *arg = NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	219
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	220 if (!PyArg_UnpackTuple(args, "seed", 0, 1, &arg))
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	221 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	222
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	223 if (arg == NULL \|\| arg == Py_None) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	224 time_t now;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	225
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	226 time(&now);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	227 init_genrand(self, (unsigned long)now);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	228 Py_INCREF(Py_None);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	229 return Py_None;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	230 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	231 /* If the arg is an int or long, use its absolute value; else use
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	232 * the absolute value of its hash code.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	233 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	234 if (PyInt_Check(arg) \|\| PyLong_Check(arg))
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	235 n = PyNumber_Absolute(arg);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	236 else {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	237 long hash = PyObject_Hash(arg);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	238 if (hash == -1)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	239 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	240 n = PyLong_FromUnsignedLong((unsigned long)hash);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	241 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	242 if (n == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	243 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	244
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	245 /* Now split n into 32-bit chunks, from the right. Each piece is
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	246 * stored into key, which has a capacity of keymax chunks, of which
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	247 * keyused are filled. Alas, the repeated shifting makes this a
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	248 * quadratic-time algorithm; we'd really like to use
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	249 * _PyLong_AsByteArray here, but then we'd have to break into the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	250 * long representation to figure out how big an array was needed
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	251 * in advance.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	252 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	253 keymax = 8; /* arbitrary; grows later if needed */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	254 keyused = 0;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	255 key = (unsigned long )PyMem_Malloc(keymax sizeof(*key));
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	256 if (key == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	257 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	258
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	259 masklower = PyLong_FromUnsignedLong(0xffffffffU);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	260 if (masklower == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	261 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	262 thirtytwo = PyInt_FromLong(32L);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	263 if (thirtytwo == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	264 goto Done;
28734 5c886e03b43e PyObject_IsTrue() can return an error condition. Raymond Hettinger <python@rcn.com> parents: 28637 diff changeset	265 while ((err=PyObject_IsTrue(n))) {
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	266 PyObject *newn;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	267 PyObject *pychunk;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	268 unsigned long chunk;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	269
28734 5c886e03b43e PyObject_IsTrue() can return an error condition. Raymond Hettinger <python@rcn.com> parents: 28637 diff changeset	270 if (err == -1)
5c886e03b43e PyObject_IsTrue() can return an error condition. Raymond Hettinger <python@rcn.com> parents: 28637 diff changeset	271 goto Done;
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	272 pychunk = PyNumber_And(n, masklower);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	273 if (pychunk == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	274 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	275 chunk = PyLong_AsUnsignedLong(pychunk);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	276 Py_DECREF(pychunk);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	277 if (chunk == (unsigned long)-1 && PyErr_Occurred())
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	278 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	279 newn = PyNumber_Rshift(n, thirtytwo);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	280 if (newn == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	281 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	282 Py_DECREF(n);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	283 n = newn;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	284 if (keyused >= keymax) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	285 unsigned long bigger = keymax << 1;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	286 if ((bigger >> 1) != keymax) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	287 PyErr_NoMemory();
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	288 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	289 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	290 key = (unsigned long *)PyMem_Realloc(key,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	291 bigger * sizeof(*key));
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	292 if (key == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	293 goto Done;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	294 keymax = bigger;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	295 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	296 assert(keyused < keymax);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	297 key[keyused++] = chunk;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	298 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	299
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	300 if (keyused == 0)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	301 key[keyused++] = 0UL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	302 result = init_by_array(self, key, keyused);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	303 Done:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	304 Py_XDECREF(masklower);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	305 Py_XDECREF(thirtytwo);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	306 Py_XDECREF(n);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	307 PyMem_Free(key);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	308 return result;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	309 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	310
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	311 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	312 random_getstate(RandomObject *self)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	313 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	314 PyObject *state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	315 PyObject *element;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	316 int i;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	317
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	318 state = PyTuple_New(N+1);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	319 if (state == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	320 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	321 for (i=0; i<N ; i++) {
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	322 element = PyLong_FromUnsignedLong(self->state[i]);
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	323 if (element == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	324 goto Fail;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	325 PyTuple_SET_ITEM(state, i, element);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	326 }
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	327 element = PyLong_FromLong((long)(self->index));
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	328 if (element == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	329 goto Fail;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	330 PyTuple_SET_ITEM(state, i, element);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	331 return state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	332
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	333 Fail:
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	334 Py_DECREF(state);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	335 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	336 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	337
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	338 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	339 random_setstate(RandomObject self, PyObject state)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	340 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	341 int i;
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	342 unsigned long element;
97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	343 long index;
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	344
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	345 if (!PyTuple_Check(state)) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	346 PyErr_SetString(PyExc_TypeError,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	347 "state vector must be a tuple");
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	348 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	349 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	350 if (PyTuple_Size(state) != N+1) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	351 PyErr_SetString(PyExc_ValueError,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	352 "state vector is the wrong size");
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	353 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	354 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	355
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	356 for (i=0; i<N ; i++) {
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	357 element = PyLong_AsUnsignedLong(PyTuple_GET_ITEM(state, i));
53799 6d64cd69f384 Merged revisions 72344 via svnmerge from Mark Dickinson <dickinsm@gmail.com> parents: 44350 diff changeset	358 if (element == (unsigned long)-1 && PyErr_Occurred())
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	359 return NULL;
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	360 self->state[i] = element & 0xffffffffUL; /* Make sure we get sane state */
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	361 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	362
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	363 index = PyLong_AsLong(PyTuple_GET_ITEM(state, i));
97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	364 if (index == -1 && PyErr_Occurred())
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	365 return NULL;
44122 97210d863d12 Issue #1727780: Support loading pickles of random.Random objects created Martin v. Löwis <martin@v.loewis.de> parents: 42334 diff changeset	366 self->index = (int)index;
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	367
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	368 Py_INCREF(Py_None);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	369 return Py_None;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	370 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	371
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	372 /*
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	373 Jumpahead should be a fast way advance the generator n-steps ahead, but
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	374 lacking a formula for that, the next best is to use n and the existing
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	375 state to create a new state far away from the original.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	376
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	377 The generator uses constant spaced additive feedback, so shuffling the
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	378 state elements ought to produce a state which would not be encountered
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	379 (in the near term) by calls to random(). Shuffling is normally
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	380 implemented by swapping the ith element with another element ranging
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	381 from 0 to i inclusive. That allows the element to have the possibility
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	382 of not being moved. Since the goal is to produce a new, different
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	383 state, the swap element is ranged from 0 to i-1 inclusive. This assures
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	384 that each element gets moved at least once.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	385
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	386 To make sure that consecutive calls to jumpahead(n) produce different
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	387 states (even in the rare case of involutory shuffles), i+1 is added to
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	388 each element at position i. Successive calls are then guaranteed to
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	389 have changing (growing) values as well as shuffled positions.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	390
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	391 Finally, the self->index value is set to N so that the generator itself
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	392 kicks in on the next call to random(). This assures that all results
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	393 have been through the generator and do not just reflect alterations to
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	394 the underlying state.
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	395 */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	396
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	397 static PyObject *
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	398 random_jumpahead(RandomObject self, PyObject n)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	399 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	400 long i, j;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	401 PyObject *iobj;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	402 PyObject *remobj;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	403 unsigned long *mt, tmp;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	404
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	405 if (!PyInt_Check(n) && !PyLong_Check(n)) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	406 PyErr_Format(PyExc_TypeError, "jumpahead requires an "
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	407 "integer, not '%s'",
44350 26384b8180c7 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. Christian Heimes <christian@cheimes.de> parents: 44122 diff changeset	408 Py_TYPE(n)->tp_name);
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	409 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	410 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	411
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	412 mt = self->state;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	413 for (i = N-1; i > 1; i--) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	414 iobj = PyInt_FromLong(i);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	415 if (iobj == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	416 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	417 remobj = PyNumber_Remainder(n, iobj);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	418 Py_DECREF(iobj);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	419 if (remobj == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	420 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	421 j = PyInt_AsLong(remobj);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	422 Py_DECREF(remobj);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	423 if (j == -1L && PyErr_Occurred())
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	424 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	425 tmp = mt[i];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	426 mt[i] = mt[j];
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	427 mt[j] = tmp;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	428 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	429
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	430 for (i = 0; i < N; i++)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	431 mt[i] += i+1;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	432
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	433 self->index = N;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	434 Py_INCREF(Py_None);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	435 return Py_None;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	436 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	437
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	438 static PyObject *
30649 8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	439 random_getrandbits(RandomObject self, PyObject args)
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	440 {
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	441 int k, i, bytes;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	442 unsigned long r;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	443 unsigned char *bytearray;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	444 PyObject *result;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	445
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	446 if (!PyArg_ParseTuple(args, "i:getrandbits", &k))
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	447 return NULL;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	448
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	449 if (k <= 0) {
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	450 PyErr_SetString(PyExc_ValueError,
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	451 "number of bits must be greater than zero");
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	452 return NULL;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	453 }
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	454
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	455 bytes = ((k - 1) / 32 + 1) * 4;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	456 bytearray = (unsigned char *)PyMem_Malloc(bytes);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	457 if (bytearray == NULL) {
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	458 PyErr_NoMemory();
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	459 return NULL;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	460 }
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	461
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	462 /* Fill-out whole words, byte-by-byte to avoid endianness issues */
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	463 for (i=0 ; i<bytes ; i+=4, k-=32) {
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	464 r = genrand_int32(self);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	465 if (k < 32)
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	466 r >>= (32 - k);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	467 bytearray[i+0] = (unsigned char)r;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	468 bytearray[i+1] = (unsigned char)(r >> 8);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	469 bytearray[i+2] = (unsigned char)(r >> 16);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	470 bytearray[i+3] = (unsigned char)(r >> 24);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	471 }
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	472
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	473 /* little endian order to match bytearray assignment order */
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	474 result = _PyLong_FromByteArray(bytearray, bytes, 1, 0);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	475 PyMem_Free(bytearray);
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	476 return result;
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	477 }
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	478
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	479 static PyObject *
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	480 random_new(PyTypeObject type, PyObject args, PyObject *kwds)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	481 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	482 RandomObject *self;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	483 PyObject *tmp;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	484
40682 77e0f4718a7c Bug #1486663: don't reject keyword arguments for subclasses of builtin Georg Brandl <georg@python.org> parents: 36324 diff changeset	485 if (type == &Random_Type && !_PyArg_NoKeywords("Random()", kwds))
35450 97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 30649 diff changeset	486 return NULL;
97c97194e64b Disallow keyword arguments for type constructors that don't use them Georg Brandl <georg@python.org> parents: 30649 diff changeset	487
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	488 self = (RandomObject *)type->tp_alloc(type, 0);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	489 if (self == NULL)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	490 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	491 tmp = random_seed(self, args);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	492 if (tmp == NULL) {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	493 Py_DECREF(self);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	494 return NULL;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	495 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	496 Py_DECREF(tmp);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	497 return (PyObject *)self;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	498 }
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	499
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	500 static PyMethodDef random_methods[] = {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	501 {"random", (PyCFunction)random_random, METH_NOARGS,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	502 PyDoc_STR("random() -> x in the interval [0, 1).")},
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	503 {"seed", (PyCFunction)random_seed, METH_VARARGS,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	504 PyDoc_STR("seed([n]) -> None. Defaults to current time.")},
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	505 {"getstate", (PyCFunction)random_getstate, METH_NOARGS,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	506 PyDoc_STR("getstate() -> tuple containing the current state.")},
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	507 {"setstate", (PyCFunction)random_setstate, METH_O,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	508 PyDoc_STR("setstate(state) -> None. Restores generator state.")},
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	509 {"jumpahead", (PyCFunction)random_jumpahead, METH_O,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	510 PyDoc_STR("jumpahead(int) -> None. Create new state from "
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	511 "existing state and integer.")},
30649 8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	512 {"getrandbits", (PyCFunction)random_getrandbits, METH_VARARGS,
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	513 PyDoc_STR("getrandbits(k) -> x. Generates a long int with "
8841d34a2c37 SF bug #812202: randint is always even Raymond Hettinger <python@rcn.com> parents: 29242 diff changeset	514 "k random bits.")},
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	515 {NULL, NULL} /* sentinel */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	516 };
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	517
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	518 PyDoc_STRVAR(random_doc,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	519 "Random() -> create a random number generator with its own internal state.");
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	520
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	521 static PyTypeObject Random_Type = {
42334 e70cdce0e8b2 Merged revisions 56467-56482 via svnmerge from Martin v. Löwis <martin@v.loewis.de> parents: 40682 diff changeset	522 PyVarObject_HEAD_INIT(NULL, 0)
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	523 "_random.Random", /tp_name/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	524 sizeof(RandomObject), /tp_basicsize/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	525 0, /tp_itemsize/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	526 /* methods */
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	527 0, /tp_dealloc/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	528 0, /tp_print/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	529 0, /tp_getattr/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	530 0, /tp_setattr/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	531 0, /tp_compare/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	532 0, /tp_repr/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	533 0, /tp_as_number/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	534 0, /tp_as_sequence/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	535 0, /tp_as_mapping/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	536 0, /tp_hash/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	537 0, /tp_call/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	538 0, /tp_str/
27104 2443c557cbc3 Patch #661760: Cygwin auto-import module patch Jason Tishler <jason@tishler.net> parents: 26990 diff changeset	539 PyObject_GenericGetAttr, /tp_getattro/
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	540 0, /tp_setattro/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	541 0, /tp_as_buffer/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	542 Py_TPFLAGS_DEFAULT \| Py_TPFLAGS_BASETYPE, /tp_flags/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	543 random_doc, /tp_doc/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	544 0, /tp_traverse/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	545 0, /tp_clear/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	546 0, /tp_richcompare/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	547 0, /tp_weaklistoffset/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	548 0, /tp_iter/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	549 0, /tp_iternext/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	550 random_methods, /tp_methods/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	551 0, /tp_members/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	552 0, /tp_getset/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	553 0, /tp_base/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	554 0, /tp_dict/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	555 0, /tp_descr_get/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	556 0, /tp_descr_set/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	557 0, /tp_dictoffset/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	558 0, /tp_init/
29242 d72ad07c739e PyType_GenericAlloc is inherited from object. Raymond Hettinger <python@rcn.com> parents: 28734 diff changeset	559 0, /tp_alloc/
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	560 random_new, /tp_new/
27104 2443c557cbc3 Patch #661760: Cygwin auto-import module patch Jason Tishler <jason@tishler.net> parents: 26990 diff changeset	561 _PyObject_Del, /tp_free/
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	562 0, /tp_is_gc/
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	563 };
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	564
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	565 PyDoc_STRVAR(module_doc,
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	566 "Module implements the Mersenne Twister random number generator.");
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	567
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	568 PyMODINIT_FUNC
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	569 init_random(void)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	570 {
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	571 PyObject *m;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	572
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	573 if (PyType_Ready(&Random_Type) < 0)
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	574 return;
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	575 m = Py_InitModule3("_random", NULL, module_doc);
36324 1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35450 diff changeset	576 if (m == NULL)
1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35450 diff changeset	577 return;
26829 f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	578 Py_INCREF(&Random_Type);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	579 PyModule_AddObject(m, "Random", (PyObject *)&Random_Type);
f64c96922708 SF patch 658251: Install a C implementation of the Mersenne Twister as the Raymond Hettinger <python@rcn.com> parents: diff changeset	580 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/_randommodule.c @ 58925:eecf1bef052d 2.6