ReactOS 0.4.15-dev-8131-g4988de4
localtime.c File Reference
#include <precomp.h>
#include <time.h>
#include "bitsfixup.h"
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Macros

#define _MAX__TIME64_T
 

Functions

errno_t localtime_s (struct tm *_tm, const time_t *ptime)
 
struct tmlocaltime (const time_t *ptime)
 

Variables

char _tz_is_set
 

Macro Definition Documentation

◆ _MAX__TIME64_T

#define _MAX__TIME64_T
Value:
0x793406fffLL /* number of seconds from
00:00:00, 01/01/1970 UTC to
23:59:59. 12/31/3000 UTC */

Definition at line 14 of file localtime.c.

Function Documentation

◆ localtime()

struct tm * localtime ( const time_t ptime)

Definition at line 47 of file localtime.c.

50{
51 time_t time = *ptime;
52 struct tm * ptm;
53
54 /* Check for invalid time value */
55 if (time < 0)
56 {
57 return 0;
58 }
59
60 /* Never without */
61 if (!_tz_is_set)
62 _tzset();
63
64 /* Check for overflow */
65
66 /* Correct for timezone */
67 time -= _timezone;
68#if 0
69 /* Correct for daylight saving */
70 if (_isdstime(time))
71 {
72 ptm->tm_isdst = 1;
73 time -= _dstbias;
74 }
75#endif
76 ptm = gmtime(&time);
77
__kernel_time_t time_t
Definition: linux.h:252
char _tz_is_set
Definition: timezone.c:10
__u16 time
Definition: mkdosfs.c:8
_CRTIMP struct tm *__cdecl gmtime(const time_t *_Time)
Definition: time.h:415
_CRTIMP void __cdecl _tzset(void)
Definition: timezone.c:92
long _dstbias
Definition: timezone.c:62
long _timezone
Definition: timezone.c:46
Definition: time.h:68
int tm_isdst
Definition: time.h:77

Referenced by localtime_s().

◆ localtime_s()

errno_t localtime_s ( struct tm _tm,
const time_t ptime 
)

Definition at line 17 of file localtime.c.

20{
21 /* check for NULL */
22 if (!_tm || !ptime )
23 {
24 if(_tm) memset(_tm, 0xFF, sizeof(struct tm));
26 0,//__FUNCTION__,
27 _CRT_WIDE(__FILE__),
28 __LINE__,
29 0);
31 return EINVAL;
32 }
33
34 /* Validate input */
35 if (*ptime < 0 || *ptime > _MAX__TIME64_T)
36 {
37 memset(_tm, 0xFF, sizeof(struct tm));
39 return EINVAL;
40 }
41
42 _tm = localtime(ptime);
#define EINVAL
Definition: acclib.h:90
#define _CRT_WIDE(_String)
Definition: crtdefs.h:55
#define NULL
Definition: types.h:112
#define _MAX__TIME64_T
Definition: localtime.c:14
struct tm * localtime(const time_t *ptime)
Definition: localtime.c:47
void _invalid_parameter(const wchar_t *expression, const wchar_t *function, const wchar_t *file, unsigned int line, uintptr_t pReserved)
errno_t __cdecl _set_errno(_In_ int _Value)
#define memset(x, y, z)
Definition: compat.h:39

Referenced by _tctime_s().

Variable Documentation

◆ _tz_is_set

char _tz_is_set
extern

Definition at line 10 of file timezone.c.

Referenced by _tzset(), and localtime().