Date and time utilities - cppreference.com (original) (raw)
Contents
[edit] Functions
| Time manipulation | |
|---|---|
| Defined in header <time.h> | |
| difftime | computes the difference between times (function) [edit] |
| time | returns the current calendar time of the system as time since epoch (function) [edit] |
| clock | returns raw processor clock time since the program is started (function) [edit] |
| timespec_get(C11) | returns the calendar time in seconds and nanoseconds based on a given time base (function) [edit] |
| timespec_getres(C23) | returns the resolution of calendar time based on a given time base (function) [edit] |
| Format conversions | |
| Defined in header <time.h> | |
| asctimeasctime_s(deprecated in C23)(C11) | converts a tm object to a textual representation (function) [edit] |
| ctimectime_s(deprecated in C23)(C11) | converts a time_t object to a textual representation (function) [edit] |
| strftime | converts a tm object to custom textual representation (function) [edit] |
| Defined in header <wchar.h> | |
| wcsftime(C95) | converts a tm object to custom wide string textual representation (function) [edit] |
| Defined in header <time.h> | |
| gmtimegmtime_rgmtime_s(C23)(C11) | converts time since epoch to calendar time expressed as Coordinated Universal Time (UTC) (function) [edit] |
| localtimelocaltime_rlocaltime_s(C23)(C11) | converts time since epoch to calendar time expressed as local time (function) [edit] |
| mktime | converts calendar time to time since epoch (function) [edit] |
[edit] Constants
[edit] Types
[edit] References
C23 standard (ISO/IEC 9899:2024):
7.27 Date and time <time.h> (p: TBD)
7.29.5.1 The wcsftime function (p: TBD)
7.31.14 Date and time <time.h> (p: TBD)
C17 standard (ISO/IEC 9899:2018):
7.27 Date and time <time.h> (p: 284-291)
7.29.5.1 The wcsftime function (p: 320-321)
7.31.14 Date and time <time.h> (p: 333)
C11 standard (ISO/IEC 9899:2011):
7.27 Date and time <time.h> (p: 388-397)
7.29.5.1 The wcsftime function (p: 439-440)
7.31.14 Date and time <time.h> (p: 456)
C99 standard (ISO/IEC 9899:1999):
7.23 Date and time <time.h> (p: 338-347)
7.24.5.1 The wcsftime function (p: 385-386)
C89/C90 standard (ISO/IEC 9899:1990):
4.12 DATE AND TIME <time.h>