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.TH CLOCK 3
.SH NAME
clock - determine processor time
.SH SYNOPSIS
#include <time.h>

clock_t clock(void)
.SH DESCRIPTION
The
.BR clock ()
function returns an approximation of processor time used by the program.
.SH RETURN VALUE
The value returned is the CPU time used so far as a clock_t.
In order to get the number of seconds used, divide by
.BR CLOCKS_PER_SEC .
If the processor time used is not available or its value cannot
be represented, the function returns the value (clock_t)-1.
.SH STANDARDS
ISO/IEC 9899:1999 Section 7.23.2.1 Paragraph 1,2,3
.SH SEE ALSO
.BR time.h (3)