NAME | SYNOPSIS | DESCRIPTION | ATTRIBUTES | CONFORMING TO | NOTES | SEE ALSO | COLOPHON 

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

NAME         top

       dysize - get number of days for a given year

SYNOPSIS         top

       #include <time.h>
       int dysize(int year);
   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
       dysize():
           Since glibc 2.19:
               _DEFAULT_SOURCE
           Glibc 2.19 and earlier:
               _BSD_SOURCE || _SVID_SOURCE

DESCRIPTION         top

       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         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────┬───────────────┬─────────┐
       │Interface │ Attribute     │ Value   │
       ├──────────┼───────────────┼─────────┤
       │dysize()  │ Thread safety │ MT-Safe │
       └──────────┴───────────────┴─────────┘

CONFORMING TO         top

       This function occurs in SunOS 4.x.

NOTES         top

       This is a compatibility function only.  Don't use it in new programs.

SEE ALSO         top

       strftime(3)

COLOPHON         top

       This page is part of release 4.12 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
       https://www.kernel.org/doc/man-pages/.
GNU                              2016-03-15                        DYSIZE(3)