dysize
Section: C Library Functions (3)
Updated: 2023-02-05
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NAME
dysize - get number of days for a given year
LIBRARY
Standard C library
(libc, -lc)
SYNOPSIS
#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
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
|
STANDARDS
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)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- ATTRIBUTES
-
- STANDARDS
-
- NOTES
-
- SEE ALSO
-
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