Author: Uri Blass
Date: 23:43:22 04/09/03
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On April 10, 2003 at 02:08:36, Tony Werten wrote: >On April 09, 2003 at 11:11:01, Uri Blass wrote: > >>Supppose file1 and file2 are numbers between 0 and 7. >> >>Am I correct to assume that in general it is better to not to use >> >>int A[8]; >>If (file1<=file2) x+=A[file2-file1]; > >Most modern compilers will do better with: > >bonus=0; >if (file1>file2) bonus=A[file2-file1]; >x+=bonus; Do you say that 3 lines are faster than one line?(I guess you mean file1<=file2 and not file1<file2 as you wrote in your next message) In any case it is only an example Practically I have a slightly different condition. if (file1+1<file2) > >The 2nd line basicly forces the compiler to use a CMOV. What does CMOV means? Uri
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