Mercurial > cpython-lru_cache-weakref

annotate Modules/_time.c @ 71285:8bc9dbc61ba6 3.2

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Issue #12326: document the recommended idiom for checking sys.platform on Unix systems. Also, point to the various alternatives.
author Antoine Pitrou <solipsis@pitrou.net>
date Sat, 09 Jul 2011 15:54:23 +0200
parents e5f5008fd56d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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62364
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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1 #include "Python.h"
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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2 #include "_time.h"
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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3
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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4 /* Exposed in timefuncs.h. */
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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5 time_t
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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6 _PyTime_DoubleToTimet(double x)
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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7 {
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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8 time_t result;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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9 double diff;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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10
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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11 result = (time_t)x;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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12 /* How much info did we lose? time_t may be an integral or
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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13 * floating type, and we don't know which. If it's integral,
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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14 * we don't know whether C truncates, rounds, returns the floor,
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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15 * etc. If we lost a second or more, the C rounding is
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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16 * unreasonable, or the input just doesn't fit in a time_t;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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17 * call it an error regardless. Note that the original cast to
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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18 * time_t can cause a C error too, but nothing we can do to
62396
e5f5008fd56d Fixed a typo in a comment.
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents: 62364
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19 * work around that.
62364
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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20 */
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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21 diff = x - (double)result;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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22 if (diff <= -1.0 || diff >= 1.0) {
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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23 PyErr_SetString(PyExc_ValueError,
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
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24 "timestamp out of range for platform time_t");
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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25 result = (time_t)-1;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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26 }
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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27 return result;
6d3b05a429b5 Issue #9012: "Separate compilation of time and datetime modules."
Alexander Belopolsky <alexander.belopolsky@gmail.com>
parents:
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28 }