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Re: [Bug-gsl] gsl-1.12 make check failure with gcc-4.4.1

From: Brian Gough
Subject: Re: [Bug-gsl] gsl-1.12 make check failure with gcc-4.4.1
Date: Mon, 17 Aug 2009 09:14:35 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Fri, 14 Aug 2009 13:36:44 -0700 (PDT),
Gregery Barton wrote:
> I've been having similar problems, and have put it down 'double'
> returning functions.  Mostly c rtl functions as most gsl return
> status codes.  At high optimization levels the accuracy of these
> functions is actually increased. Doubles are passed on the stack as
> 64-bit without optimization. If the compiler optimizes to pass and
> return with floating point registers then the function is given a
> free upgrade to a long double version (assuming the platform's FPU
> has 80bit registers).

What happens if you run the optimised code with
GSL_IEEE_MODE=double-precision,mask-all to disable extended precision
- does it then pass the test?

Brian Gough
(GSL Maintainer)

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