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clock_getres(3) Library Functions Manual clock_getres(3)
NAME
clock_getres - Gets the resolution for the specified clock (P1003.1b)
LIBRARY
Realtime Library (librt.so, librt.a)
SYNOPSIS
#include <time.h>
int clock_getres (
clockid_t clock_id,
struct timespec *res);
PARAMETERS
clock_id The clock type used to obtain the resolution. The CLOCK_REALTIME clock is supported and represents the TIME-OF-DAY clock for
the system.
*res A pointer to the timespec data structure that receives the value of the clock's resolution.
DESCRIPTION
The clock_getres function returns the resolution value for the specified clock. If the res argument is NULL, the clock resolution is not
returned.
RETURN VALUES
On a successful call, a value of 0 (zero) is returned.
On an unsuccessful call, a value of -1 is returned and errno is set to indicate that an error occurred.
ERRORS
The clock_getres function fails under the following condition:
[EINVAL] The clock_id argument does not specify a known clock.
RELATED INFORMATION
Functions: time(1), ctime(3), timer_settime(3)
Guide to Realtime Programming delim off
clock_getres(3)