time.h
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上传日期:2013-04-11
资源大小:19621k
文件大小:2k
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操作系统开发
开发平台:
Visual C++
- /***
- *time.h - definitions/declarations for time routines
- *
- * Copyright (c) 1985-1988, Microsoft Corporation. All rights reserved.
- *
- *Purpose:
- * This file has declarations of time routines and defines
- * the structure returned by the localtime and gmtime routines and
- * used by asctime.
- * [ANSI/System V]
- *
- *******************************************************************************/
- #ifndef NO_EXT_KEYS /* extensions enabled */
- #define _CDECL cdecl
- #define _NEAR near
- #else /* extensions not enabled */
- #define _CDECL
- #define _NEAR
- #endif /* NO_EXT_KEYS */
- /* define the implementation defined time type */
- #ifndef _TIME_T_DEFINED
- typedef long time_t; /* time value */
- #define _TIME_T_DEFINED /* avoid multiple def's of time_t */
- #endif
- #ifndef _CLOCK_T_DEFINED
- typedef long clock_t;
- #define _CLOCK_T_DEFINED
- #endif
- #ifndef _TM_DEFINED
- struct tm {
- int tm_sec; /* seconds after the minute - [0,59] */
- int tm_min; /* minutes after the hour - [0,59] */
- int tm_hour; /* hours since midnight - [0,23] */
- int tm_mday; /* day of the month - [1,31] */
- int tm_mon; /* months since January - [0,11] */
- int tm_year; /* years since 1900 */
- int tm_wday; /* days since Sunday - [0,6] */
- int tm_yday; /* days since January 1 - [0,365] */
- int tm_isdst; /* daylight savings time flag */
- };
- #define _TM_DEFINED
- #endif
- #define CLK_TCK 1000
- /* extern declarations for the global variables used by the ctime family of
- * routines.
- */
- extern int _NEAR _CDECL daylight; /* non-zero if daylight savings time is used */
- extern long _NEAR _CDECL timezone; /* difference in seconds between GMT and local time */
- extern char * _NEAR _CDECL tzname[2]; /* standard/daylight savings time zone names */
- /* function prototypes */
- char * _CDECL asctime(const struct tm *);
- char * _CDECL ctime(const time_t *);
- clock_t _CDECL clock(void);
- double _CDECL difftime(time_t, time_t);
- struct tm * _CDECL gmtime(const time_t *);
- struct tm * _CDECL localtime(const time_t *);
- time_t _CDECL mktime(struct tm *);
- char * _CDECL _strdate(char *);
- char * _CDECL _strtime(char *);
- time_t _CDECL time(time_t *);
- void _CDECL tzset(void);