TIME_UTC

 

C

Compiler support

Language

Headers

Type support

Program utilities

Variadic function support

Error handling

Dynamic memory management

Strings library

Algorithms

Numerics

Date and time utilities

Input/output support

Localization support

Concurrency support (C11)

Technical Specifications

Symbol index

 

Date and time utilities

Functions

Time manipulation

difftime

time

clock

timespec_get (C11)

timespec_getres (C23)

Format conversions

asctimeasctime_s (deprecated in C23)(C11)

ctimectime_s (deprecated in C23)(C11)

strftime

wcsftime (C95)

gmtimegmtime_rgmtime_s (C23)(C11)

localtimelocaltime_rlocaltime_s (C23)(C11)

mktime

Constants

CLOCKS_PER_SEC

Types

tm

time_t

clock_t

timespec (C11)

 

Defined in header <time.h>
#define TIME_UTC /*implementation defined*/		(since C11)

Expands to an integer constant greater than 0 that designates the UTC time base and used by timespec_get().

Notes

Implementations may define additional time bases, but are only required to support a real time clock based on UTC

References

• C11 standard (ISO/IEC 9899:2011):

• 7.27.1/2 TIME_UTC (p: 388)

See also

timespec_get (C11)	returns the calendar time in seconds and nanoseconds based on a given time base (function)
timespec (C11)	time in seconds and nanoseconds (struct)
C++ documentation for TIME_UTC