[Bf-committers] sqrt code snippet
Sun, 30 May 2004 16:28:49 +0200
I wrote this piece of code to benchmark speed of sqrt(). I did it in
three minutes, so don't flame me for... umm? bad code ;)
Uncomment respective lines then compile.
// float a,b,c,d;
// double a,b,c,d;
long double a,b,c,d;
// to fool compiler optimizations....
// without this line a compiler may completely ignore above sqrt()
I launched 'time test' several times, and averaged results for
my PIII 600Mhz are:
float: 2.96s, double: 3.76s, long double 5.49s
I compiled with `g++ -o test test` if you want to ask why g++, then I
can answer only: I was in hurry :)
Janek Kozicki |