Mercurial > cpython-lru_cache-weakref
annotate Include/intobject.h @ 3720:b341def4eef8 legacy-trunk
Ignore latex intermediate products.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Wed, 26 Jun 1996 19:30:01 +0000 |
| parents | fa98dda07877 |
| children | 65d2d8e67da3 |
| rev | line source |
|---|---|
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1 #ifndef Py_INTOBJECT_H |
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2 #define Py_INTOBJECT_H |
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3 #ifdef __cplusplus |
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4 extern "C" { |
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5 #endif |
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6 |
| 145 | 7 /*********************************************************** |
| 2058 | 8 Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 9 The Netherlands. | |
| 145 | 10 |
| 11 All Rights Reserved | |
| 12 | |
| 13 Permission to use, copy, modify, and distribute this software and its | |
| 14 documentation for any purpose and without fee is hereby granted, | |
| 15 provided that the above copyright notice appear in all copies and that | |
| 16 both that copyright notice and this permission notice appear in | |
| 17 supporting documentation, and that the names of Stichting Mathematisch | |
| 18 Centrum or CWI not be used in advertising or publicity pertaining to | |
| 19 distribution of the software without specific, written prior permission. | |
| 20 | |
| 21 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | |
| 22 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 23 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | |
| 24 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 25 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 26 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
| 27 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 28 | |
| 29 ******************************************************************/ | |
| 30 | |
| 6 | 31 /* Integer object interface */ |
| 32 | |
| 33 /* | |
| 34 123456789-123456789-123456789-123456789-123456789-123456789-123456789-12 | |
| 35 | |
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36 PyIntObject represents a (long) integer. This is an immutable object; |
| 6 | 37 an integer cannot change its value after creation. |
| 38 | |
| 39 There are functions to create new integer objects, to test an object | |
| 40 for integer-ness, and to get the integer value. The latter functions | |
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41 returns -1 and sets errno to EBADF if the object is not an PyIntObject. |
| 6 | 42 None of the functions should be applied to nil objects. |
| 43 | |
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44 The type PyIntObject is (unfortunately) exposed here so we can declare |
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45 _Py_TrueStruct and _Py_ZeroStruct below; don't use this. |
| 6 | 46 */ |
| 47 | |
| 48 typedef struct { | |
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49 PyObject_HEAD |
| 6 | 50 long ob_ival; |
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51 } PyIntObject; |
| 6 | 52 |
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53 extern DL_IMPORT(PyTypeObject) PyInt_Type; |
| 6 | 54 |
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55 #define PyInt_Check(op) ((op)->ob_type == &PyInt_Type) |
| 6 | 56 |
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57 extern PyObject *PyInt_FromLong Py_PROTO((long)); |
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58 extern long PyInt_AsLong Py_PROTO((PyObject *)); |
| 6 | 59 |
| 60 | |
| 61 /* | |
| 62 123456789-123456789-123456789-123456789-123456789-123456789-123456789-12 | |
| 63 | |
| 64 False and True are special intobjects used by Boolean expressions. | |
| 65 All values of type Boolean must point to either of these; but in | |
| 66 contexts where integers are required they are integers (valued 0 and 1). | |
| 67 Hope these macros don't conflict with other people's. | |
| 68 | |
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69 Don't forget to apply Py_INCREF() when returning True or False!!! |
| 6 | 70 */ |
| 71 | |
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72 extern DL_IMPORT(PyIntObject) _Py_ZeroStruct, _Py_TrueStruct; /* Don't use these directly */ |
| 6 | 73 |
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74 #define Py_False ((PyObject *) &_Py_ZeroStruct) |
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75 #define Py_True ((PyObject *) &_Py_TrueStruct) |
| 6 | 76 |
| 77 /* Macro, trading safety for speed */ | |
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78 #define PyInt_AS_LONG(op) ((op)->ob_ival) |
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79 |
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80 #ifdef __cplusplus |
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81 } |
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82 #endif |
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83 #endif /* !Py_INTOBJECT_H */ |