DYSIZE(3) Linux Programmer's Manual DYSIZE(3) NAME dysize - get number of days for a given year SYNOPSIS #include <time.h> int dysize(int year); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): dysize(): _BSD_SOURCE || _SVID_SOURCE 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>. ATTRIBUTES Multithreading (see pthreads(7)) The dysize() function is thread-safe. CONFORMING TO This function occurs in SunOS 4.x. NOTES This is a compatibility function only. Don't use it in new programs. SEE ALSO strftime(3) COLOPHON This page is part of release 3.74 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at http://www.kernel.org/doc/man-pages/. GNU 2013-09-25 DYSIZE(3)
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