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Re: [Help-gsl] Make check fails

From: Oliver Jennrich
Subject: Re: [Help-gsl] Make check fails
Date: Wed, 27 May 2009 09:59:22 +0200

On Tue, May 26, 2009 at 11:01 PM, Michael Braun <address@hidden> wrote:
> Brian:
> I switched the -fast flag to -O2, and it worked.  Is this possibly a bug in
> GCC or GSL, or is it just life with optimized code?

My guess would be that -fast switches on the -ffast-math option. That
is known to break IEEE compliance, so it is would be not surprising if
this gives code that yields different numeric results.

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