On 27 Apr., 18:23, Bill Hart <goodwillh...@googlemail.com> wrote:
> What are the major differences in GCC 4.5.0 which seem to be affecting
> Sage? Is there something new that we should be aware of when writing
> code for this compiler?
>From GCC NEWS:
* On x86 targets, code containing floating-point calculations may
run
significantly slower when compiled with GCC 4.5 in strict C99
conformance mode than they did with earlier GCC versions. This
is
due to stricter standard conformance of the compiler and can be
avoided by using the option -fexcess-precision=fast; also see
[5]below.
I'm not sure if this directly affects Sage, but we somewhere [ :-( ]
had a discussion on the influences of compiling all [Sage library] C
code with "-std=c99".
-Leif
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