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Command: clock | Section: 3 | Source: Digital UNIX | File: clock.3.gz
clock(3) Library Functions Manual clock(3)
NAME
clock - Reports CPU time used
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <time.h>
clock_t clock (void);
STANDARDS
Interfaces documented on this reference page conform to industry stan-
dards as follows:
clock(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about in-
dustry standards and associated tags.
DESCRIPTION
The clock() function reports the amount of processor time used by the
calling process.
RETURN VALUES
The clock() function returns the amount of processor time (in microsec-
onds) used since the first call to clock(). If the processor time used
is not available or its value cannot be represented, the clock() func-
tion returns (clock_t)-1.
RELATED INFORMATION
Functions: ctime(3), getrusage(2), times(3), wait(2)
Standards: standards(5) delim off
clock(3)