Subject: Re: [boost] sorting floats by casting to integer
From: Steven Ross (spreadsort_at_[hidden])
Date: 2009-07-27 01:48:04
On Sun, Jul 26, 2009 at 5:22 PM, Cory Nelson <phrosty_at_[hidden]> wrote:
> > Thanks for the suggestion.
> > I ended up passing those flags you suggested, and obtained this result:
> > cl : Command line warning D9002 : ignoring unknown option '-march=nocona'
> > cl : Command line warning D9002 : ignoring unknown option '-mfpmath=sse'
> Those are for GCC. For VC++, you want to use /arch:SSE2.
Thanks Cory. There was no warning with that option specified, but there
was also no measurable performance change. I verified that MSVC was being
called with the option, and that if I misspelled the option, a warning was
issued. I think that SSE is deliberately disabled in the cheap version of
MSVC I bought, based upon the Microsoft documentation.
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