SIMPLE SOLUTIONS

DYSIZE - reference manual online

Get number of days for a given year.

Chapter
2015-03-02
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 For an explanation of the terms used in this section, see attributes(7). ┌──────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├──────────┼───────────────┼─────────┤ │dysize() │ Thread safety │ MT-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 4.04 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 2015-03-02 DYSIZE(3)
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dysize(3) referred by
refer to attributes(7) | feature_test_macros(7) | strftime(3)