Section: Linux Programmer's Manual (3)
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dysize - get number of days for a given year
int dysize(int year);
Feature Test Macro Requirements for glibc (see
Since glibc 2.19:
Glibc 2.19 and earlier:
_BSD_SOURCE || _SVID_SOURCE
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
also found in
For an explanation of the terms used in this section, see
This function occurs in SunOS 4.x.
This is a compatibility function only.
Don't use it in new programs.
This page is part of release 4.15 of the Linux
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
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This document was created by
using the manual pages.
Time: 06:09:12 GMT, September 23, 2018