timegm.c File Reference

#include <time.h>
#include <stdlib.h>

Go to the source code of this file.

Macros
#define	_DAYS_IN_MONTH(x)   ((x == 1) ? days_in_feb : DAYS_IN_MONTH[x])
#define	_DAYS_IN_YEAR(year)   (_ISLEAP(year) ? 366 : 365)
#define	_ISLEAP(y)   (((y) % 4) == 0 && (((y) % 100) != 0 || (((y)+1900) % 400) == 0))
#define	_SEC_IN_DAY   86400L
#define	_SEC_IN_HOUR   3600L
#define	_SEC_IN_MINUTE   60L

Functions
time_t	timegm (struct tm *tim_p)
static void	validate_structure (struct tm *tim_p)

Variables
static const int	_DAYS_BEFORE_MONTH [12]
static const int	DAYS_IN_MONTH [12]

Macro Definition Documentation

_DAYS_IN_MONTH

#define _DAYS_IN_MONTH

(

x

)

((x == 1) ? days_in_feb : DAYS_IN_MONTH[x])

Definition at line 52 of file timegm.c.

_DAYS_IN_YEAR

#define _DAYS_IN_YEAR

(

year

)

(_ISLEAP(year) ? 366 : 365)

Definition at line 58 of file timegm.c.

_ISLEAP

#define _ISLEAP

(

y

)

(((y) % 4) == 0 && (((y) % 100) != 0 || (((y)+1900) % 400) == 0))

Definition at line 57 of file timegm.c.

_SEC_IN_DAY

#define _SEC_IN_DAY   86400L

Definition at line 47 of file timegm.c.

_SEC_IN_HOUR

#define _SEC_IN_HOUR   3600L

Definition at line 46 of file timegm.c.

_SEC_IN_MINUTE

#define _SEC_IN_MINUTE   60L

As there is no timegm() function neither in newlib nor in POSIX, we add one here (based on a simplified newlib mktime()).

It is used in Chan FatFS to convert dates fields.

Definition at line 45 of file timegm.c.

Function Documentation

timegm()

time_t timegm

(

struct tm *

tim_p

)

Definition at line 71 of file timegm.c.

validate_structure()

static void validate_structure ( struct tm *  tim_p )

static

Definition at line 124 of file timegm.c.

Variable Documentation

_DAYS_BEFORE_MONTH

const int _DAYS_BEFORE_MONTH[12]

static

Initial value:

=
  { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }

Definition at line 54 of file timegm.c.

DAYS_IN_MONTH

const int DAYS_IN_MONTH[12]

static

Initial value:

=
  { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }

Definition at line 49 of file timegm.c.