2 cpu-timer.cc -- implement Cpu_timer
4 source file of the Flower Library
6 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "cpu-timer.hh"
12 #ifndef CLOCKS_PER_SEC
14 #define CLOCKS_PER_SEC CLK_TCK
15 #elif defined _SC_CLK_TCK
16 #define CLOCKS_PER_SEC sysconf (_SC_CLK_TCK)
18 #error cannot determine CLOCKS_PER_SEC
23 Cpu_timer::Cpu_timer ()
30 start_clock_
= clock ();
36 clock_t stop
= clock ();
37 return (stop
-start_clock_
)/Real (CLOCKS_PER_SEC
);