clock[cumulative processor time]

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clock
[cumulative processor time]

SYNOPSIS
#include <time.h>
clock_t clock(void);

DESCRIPTION
clock calculates the best available approximation of the cumulative amount of time used by your program since it started. To convert the result into seconds, divide by the macro, CLOCKS_PER_SEC.

RETURNS
The amount of processor time used so far by your program, in units defined by the machine-dependent macro, CLOCKS_PER_SEC. If no measurement is available, the result is -1.

COMPLIANCE
ANSI C requires clock and CLOCKS_PER_SEC.

Supporting OS subroutine required: times.