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Rename two directories: headers -> posix-headers, functions -> posix-functions.
author Bruno Haible <bruno@clisp.org>
date Sun, 20 Jan 2008 00:09:59 +0100
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children c83dc7e8df57
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9638
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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1 @node ctime_r
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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2 @section @code{ctime_r}
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3 @findex ctime_r
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4
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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5 POSIX specification: @url{http://www.opengroup.org/susv3xsh/ctime_r.html}
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6
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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7 Gnulib module: ---
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8
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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9 Portability problems fixed by Gnulib:
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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10 @itemize
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11 @end itemize
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12
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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13 Portability problems not fixed by Gnulib:
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14 @itemize
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15 @item
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16 This function is missing on some platforms:
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17 mingw.
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18 @item
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19 This function may put more than 26 bytes into the argument buffer if an
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20 invalid year is passed.
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21 @end itemize
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22
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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23 @code{ctime_r} takes a pre-allocated buffer and length of the buffer,
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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24 and returns @code{NULL} on errors.
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25 The input buffer should be at least 26 bytes in size. The output
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26 string is locale-independent. However, years can have more than 4
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27 digits if @code{time_t} is sufficiently wide, so the length of the
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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28 required output buffer is not easy to determine. Increasing the
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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29 buffer size when @code{ctime_r} returns @code{NULL} is not necessarily
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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30 sufficient. The @code{NULL} return value could mean some other error
070329237839 Rename two directories: headers -> posix-headers, functions -> posix-functions.
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31 condition, which will not go away by increasing the buffer size.
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32
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33 A more flexible function is @code{strftime}. However, note that it is
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34 locale dependent.