NAME
clock —
determine processor time
used
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <time.h>
clock_t
clock(
void);
DESCRIPTION
The
clock() function determines the amount of processor time
used since the invocation of the calling process, measured in
CLOCKS_PER_SEC
s.
RETURN VALUES
The
clock() function returns the amount of time used unless an
error occurs, in which case the return value is -1.
SEE ALSO
getrusage(2)
STANDARDS
The
clock() function conforms to
ANSI
X3.159-1989 (“ANSI C89”).