Re^5: code optimization

[spx2]

I tried the following test for division.

perl -MTime::HiRes=gettimeofday,tv_interval -e '$istart=1000;$iend=500
+0;  $t0=[gettimeofday]; for $x($istart..$iend){for $y($istart..$iend)
+{ $x/$y }}; $t1=[gettimeofday]; print "lasted->".tv_interval($t0,$t1)
+."\n"'

I did the same thing for multiplication. On a couple of runs for division I got the times:

• 1.032998
• 1.029043
• 1.043523
• 1.059354
• 1.034561
• 1.072301
• 1.10864
• 1.034843

On a couple of runs for multiplication I got the times:

• 1.075402
• 1.093403
• 1.089273
• 1.077661
• 1.074203
• 1.091646
• 1.080421

These numbers are seconds.

I couldn't draw any conclusions from this...