That is right for positive integers. But for floating point numbers ? Cheers, Raoul Le 19 janv. 2014 21:23, "Philippe" <phili...@quarta.com.br> a écrit :
> forgot > > X shl 1 > > normaly the fastest ... > > > > Em 19.01.2014 17:47, Ched escreveu: > > Dear Freepascalers, > > The multiplication in floating arthmetic units is usualy know as being slower > than the addition. So, have > I interest to code X+X, 2*X or X*2 when using reals (mainly double and > extended) ?And with integers ? > > Can the compiler optimise this operation choosing the fastest one - probably > depending on the > architecture x86, arm, aso. > > Cheers, Raoul > _______________________________________________ > fpc-pascal maillist - > fpc-pascal@lists.freepascal.orghttp://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal > > > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal >
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