1DYSIZE(3)                  Linux Programmer's Manual                 DYSIZE(3)
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NAME

6       dysize - get number of days for a given year
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SYNOPSIS

9       #include <time.h>
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11       int dysize(int year);
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13   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
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15       dysize(): _BSD_SOURCE || _SVID_SOURCE
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DESCRIPTION

18       The  function  returns  365  for a normal year and 366 for a leap year.
19       The calculation for leap year is based on:
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21       (year) %4 == 0 && ((year) %100 != 0 || (year) %400 == 0)
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23       The formula is defined  in  the  macro  __isleap(year)  also  found  in
24       <time.h>.
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CONFORMING TO

27       This function occurs in SunOS 4.x.
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NOTES

30       This  is  a compatibility function only.  Don't use it in new programs.
31       The SCO version of this function had a year-2000 problem.
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SEE ALSO

34       strftime(3)
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COLOPHON

37       This page is part of release 3.22 of the Linux  man-pages  project.   A
38       description  of  the project, and information about reporting bugs, can
39       be found at http://www.kernel.org/doc/man-pages/.
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43GNU                               2007-07-26                         DYSIZE(3)
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