CLOCK(3)

NAME
9.2 `clock'--cumulative processor time

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

DESCRIPTION
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 (clock_t)`-1'.

PORTABILITY
ANSI C requires `clock' and `CLOCKS_PER_SEC'.
   Supporting OS subroutine required: `times'.

SEE ALSO
clock is part of the library. The full documentation for is maintained as a Texinfo manual. If info and are properly installed at your site, the command

    info

will give you access to the complete manual.