Date and time utilities
< c
Functions
Time manipulation | |
| Defined in header
<time.h> | |
| computes the difference between times (function) | |
| returns the current calendar time of the system as time since epoch (function) | |
| returns raw processor clock time since the program is started (function) | |
| (since C11) |
returns the calendar time based on a given time base (function) |
Format conversions | |
| Defined in header
<time.h> | |
| (C11) |
converts a tm object to a textual representation (function) |
| (C11) |
converts a time_t object to a textual representation (function) |
converts a tm object to custom textual representation (function) | |
| Defined in header
<wchar.h> | |
| (C95) |
converts a tm object to custom wide string textual representation (function) |
| Defined in header
<time.h> | |
| (C11) |
converts time since epoch to calendar time expressed as Coordinated Universal Time (UTC) (function) |
| (C11) |
converts time since epoch to calendar time expressed as local time (function) |
| converts calendar time to time since epoch (function) | |
Constants
| Defined in header
<time.h> | |
| number of processor clock ticks per second (macro constant) | |
Types
| Defined in header
<time.h> | |
| calendar time type (struct) | |
| calendar time since epoch type (typedef) | |
| processor time since era type (typedef) | |
| (since C11) |
time in seconds and nanoseconds (struct) |
References
- 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>