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RedHat 9 (Linux i386) - man page for dysize (redhat section 3)

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

NAME
       dysize - get number of days for a given year

SYNOPSIS
       #define _BSD_SOURCE   /* or: #define _SVID_SOURCE */
       #include <time.h>

       int dysize(int year);

DESCRIPTION
       The  function  returns 365 for a normal year and 366 for a leap year.  The calculation for
       leap year is based on:

       (year) %4 == 0 && ((year) %100 != 0 || (year) %400 == 0)

       The formula is defined in the macro __isleap(year) also found in <time.h>.

CONFORMING TO
       This function occurs in SunOS 4.x.

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

SEE ALSO
       strftime(3), time(3)

GNU					November 12, 2001				DYSIZE(3)


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