Click this button to go to the index for this section.

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 standards
  as follows:

  clock():  XPG4, XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry 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 microseconds)
  used since the first call to clock().	 If the processor time used is not
  available or its value cannot be represented, the clock() function returns
  (clock_t)-1.

RELATED INFORMATION
  Functions: ctime(3), getrusage(2), times(3), wait(2)

  Standards: standards(5)