CLOCK(3C-SysV)      RISC/os Reference Manual       CLOCK(3C-SysV)



NAME
     clock - report CPU time used

SYNOPSIS
     long clock ( )

DESCRIPTION
     clock returns the amount of CPU time (in microseconds) used
     since the first call to clock.  The time reported is the sum
     of the user and system times of the calling process and its
     terminated child processes for which it has executed
     wait(2), or system(3S).

SEE ALSO
     times(2), wait(2), popen(3S), system(3S).

ERRORS
     The value returned by clock is defined in microseconds for
     compatibility with systems that have CPU clocks with much
     higher resolution.  Because of this, the value returned will
     wrap around after accumulating only 2147 seconds of CPU time
     (about 36 minutes).

































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