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Re: [Help-gsl] Make check fails
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From: |
Oliver Jennrich |
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Subject: |
Re: [Help-gsl] Make check fails |
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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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