ReactOS 0.4.15-dev-5666-gc548b97
mktime.c File Reference
#include <precomp.h>
#include "bitsfixup.h"
Include dependency graph for mktime.c:

Go to the source code of this file.

Macros

#define MAX_32BIT_TIME   0xFFFFFFFFULL
 

Functions

__time64_t mktime_worker (struct tm *ptm, int utc)
 
_mkgmtime
time_t _mkgmtime (struct tm *ptm)
 
time_t mktime (struct tm *ptm)
 
__time32_t _mkgmtime32 (struct tm *ptm)
 
__time32_t _mktime32 (struct tm *ptm)
 
__time64_t _mkgmtime64 (struct tm *ptm)
 
__time64_t _mktime64 (struct tm *ptm)
 

Variables

static int g_monthdays [13] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365}
 

Macro Definition Documentation

◆ MAX_32BIT_TIME

#define MAX_32BIT_TIME   0xFFFFFFFFULL

Definition at line 11 of file mktime.c.

Function Documentation

◆ _mkgmtime()

time_t _mkgmtime ( struct tm ptm)

Definition at line 114 of file mktime.c.

115{
116 __time64_t time = mktime_worker(ptm, 1);
117 return (time_t)((time > MAX_32BIT_TIME) ? -1 : time);
118}
__kernel_time_t time_t
Definition: linux.h:252
__u16 time
Definition: mkdosfs.c:8
__time64_t mktime_worker(struct tm *ptm, int utc)
Definition: mktime.c:16
#define MAX_32BIT_TIME
Definition: mktime.c:11

◆ _mkgmtime32()

__time32_t _mkgmtime32 ( struct tm ptm)

Definition at line 128 of file mktime.c.

129{
130 __time64_t time = mktime_worker(ptm, 1);
131 return (__time32_t)((time > MAX_32BIT_TIME) ? -1 : time);
132}
long __time32_t
Definition: crtdefs.h:379

◆ _mkgmtime64()

__time64_t _mkgmtime64 ( struct tm ptm)

Definition at line 142 of file mktime.c.

143{
144 return mktime_worker(ptm, 1);
145}

Referenced by _mkgmtime().

◆ _mktime32()

__time32_t _mktime32 ( struct tm ptm)

Definition at line 135 of file mktime.c.

136{
137 __time64_t time = mktime_worker(ptm, 0);
138 return (__time32_t)((time > MAX_32BIT_TIME) ? -1 : time);
139}

◆ _mktime64()

__time64_t _mktime64 ( struct tm ptm)

Definition at line 148 of file mktime.c.

149{
150 return mktime_worker(ptm, 0);
151}

Referenced by ATL::CTime::CTime(), and mktime().

◆ mktime()

time_t mktime ( struct tm ptm)

Definition at line 121 of file mktime.c.

122{
123 __time64_t time = mktime_worker(ptm, 0);
124 return (time_t)((time > MAX_32BIT_TIME) ? -1 : time);
125}

◆ mktime_worker()

__time64_t mktime_worker ( struct tm ptm,
int  utc 
)

Definition at line 16 of file mktime.c.

17{
18 struct tm *ptm2;
19 __time64_t time;
20 int mons, years, leapyears;
22 DWORD ret;
23
24 /* Normalize year and month */
25 if (ptm->tm_mon < 0)
26 {
27 mons = -ptm->tm_mon - 1;
28 ptm->tm_year -= 1 + mons / 12;
29 ptm->tm_mon = 11 - (mons % 12);
30 }
31 else if (ptm->tm_mon > 11)
32 {
33 mons = ptm->tm_mon;
34 ptm->tm_year += (mons / 12);
35 ptm->tm_mon = mons % 12;
36 }
37
38 /* Is it inside margins */
39 if (ptm->tm_year < 70 || ptm->tm_year > 139) // FIXME: max year for 64 bits
40 {
41 return -1;
42 }
43
44 years = ptm->tm_year - 70;
45
46 /* Number of leapyears passed since 1970 */
47 leapyears = (years + 1) / 4;
48
49 /* Calculate days up to 1st of Jan */
50 time = years * 365 + leapyears;
51
52 /* Calculate days up to 1st of month */
53 time += g_monthdays[ptm->tm_mon];
54
55 /* Check if we need to add a leap day */
56 if (((years + 2) % 4) == 0)
57 {
58 if (ptm->tm_mon > 2)
59 {
60 time++;
61 }
62 }
63
64 time += ptm->tm_mday - 1;
65
66 time *= 24;
67 time += ptm->tm_hour;
68
69 time *= 60;
70 time += ptm->tm_min;
71
72 time *= 60;
73 time += ptm->tm_sec;
74
75 if (time < 0)
76 {
77 return -1;
78 }
79
80 /* Finally get normalized tm struct */
81 ptm2 = _gmtime64(&time);
82 if (!ptm2)
83 {
84 return -1;
85 }
86 *ptm = *ptm2;
87
88 /* Finally adjust by the difference to GMT in seconds */
91 {
92 time += tzi.Bias * 60;
93 }
94
95 return time;
96}
DWORD WINAPI GetTimeZoneInformation(LPTIME_ZONE_INFORMATION lpTimeZoneInformation)
Definition: timezone.c:262
unsigned long DWORD
Definition: ntddk_ex.h:95
struct tm * _gmtime64(const __time64_t *ptime)
Definition: gmtime.c:104
static int g_monthdays[13]
Definition: mktime.c:13
Definition: time.h:68
int tm_mon
Definition: time.h:73
int tm_year
Definition: time.h:74
int tm_hour
Definition: time.h:71
int tm_sec
Definition: time.h:69
int tm_mday
Definition: time.h:72
int tm_min
Definition: time.h:70
int ret
#define TIME_ZONE_ID_INVALID
Definition: winbase.h:286

Referenced by _mkgmtime(), _mkgmtime32(), _mkgmtime64(), _mktime32(), _mktime64(), and mktime().

Variable Documentation

◆ g_monthdays

int g_monthdays[13] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365}
static

Definition at line 13 of file mktime.c.

Referenced by mktime_worker().