projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright 2001 Walter Harms (walter.harms@informatik.uni-oldenburg.de) |
| 2 | .\" | |
| 4b72fb64 | 3 | .\" %%%LICENSE_START(verbatim) |
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4 | .\" Permission is granted to make and distribute verbatim copies of this |
| 5 | .\" manual provided the copyright notice and this permission notice are | |
| 6 | .\" preserved on all copies. | |
| 7 | .\" | |
| 8 | .\" Permission is granted to copy and distribute modified versions of this | |
| 9 | .\" manual under the conditions for verbatim copying, provided that the | |
| 10 | .\" entire resulting derived work is distributed under the terms of a | |
| 11 | .\" permission notice identical to this one. | |
| c13182ef | 12 | .\" |
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13 | .\" Since the Linux kernel and libraries are constantly changing, this |
| 14 | .\" manual page may be incorrect or out-of-date. The author(s) assume no | |
| 15 | .\" responsibility for errors or omissions, or for damages resulting from | |
| 16 | .\" the use of the information contained herein. The author(s) may not | |
| 17 | .\" have taken the same level of care in the production of this manual, | |
| 18 | .\" which is licensed free of charge, as they might when working | |
| 19 | .\" professionally. | |
| c13182ef | 20 | .\" |
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21 | .\" Formatted or processed versions of this manual, if unaccompanied by |
| 22 | .\" the source, must acknowledge the copyright and authors of this work. | |
| 4b72fb64 | 23 | .\" %%%LICENSE_END |
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24 | .\" |
| 25 | .\" aeb: some corrections | |
| 0e4d2d22 | 26 | .TH DYSIZE 3 2010-09-22 "GNU" "Linux Programmer's Manual" |
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27 | .SH NAME |
| 28 | dysize \- get number of days for a given year | |
| 29 | .SH SYNOPSIS | |
| 0daa9e92 | 30 | .B "#include <time.h>" |
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31 | .sp |
| 32 | .BI "int dysize(int " year ); | |
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33 | .sp |
| 34 | .in -4n | |
| 35 | Feature Test Macro Requirements for glibc (see | |
| 36 | .BR feature_test_macros (7)): | |
| 37 | .in | |
| 38 | .sp | |
| 39 | .BR dysize (): | |
| 40 | _BSD_SOURCE || _SVID_SOURCE | |
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41 | .SH DESCRIPTION |
| 42 | The function returns 365 for a normal year and 366 for a leap year. | |
| 43 | The calculation for leap year is based on: | |
| 44 | .sp | |
| 45 | (year) %4 == 0 && ((year) %100 != 0 || (year) %400 == 0) | |
| 46 | .sp | |
| 47 | The formula is defined in the macro | |
| 48 | .I __isleap(year) | |
| 49 | also found in | |
| 50 | .IR <time.h> . | |
| 47297adb | 51 | .SH CONFORMING TO |
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52 | This function occurs in SunOS 4.x. |
| 53 | .SH NOTES | |
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54 | This is a compatibility function only. |
| 55 | Don't use it in new programs. | |
| 0e4d2d22 | 56 | .\" The SCO version of this function had a year-2000 problem. |
| 47297adb | 57 | .SH SEE ALSO |
| cc4615cc | 58 | .BR strftime (3) |