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[Bug-gsl] [bug #39171] make check errors with gcc -ffast-math (or defaul
[Bug-gsl] [bug #39171] make check errors with gcc -ffast-math (or default Intel icc)
Wed, 05 Jun 2013 21:14:49 +0000
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Summary: make check errors with gcc -ffast-math (or default
Project: GNU Scientific Library
Submitted by: psa
Submitted on: Wed 05 Jun 2013 09:14:48 PM GMT
Severity: 3 - Normal
Assigned to: None
Discussion Lock: Any
GSL will not pass make check with the -ffast-math flag passed to gcc.
Similarly, Intel's icc default configuration for -O2 includes -ffast-math
behavior and also fails (see bug #39152).
contains a decent description of the various optimizations turned on by
-ffast-math and the default icc configuration.
Getting GSL to pass make check with -ffast-math will most likely be a long and
difficult project, involving rewrites of various routines to perform more
consistently with these optimizations.
It is unclear if the effort is worth the reward, but this bug can be left open
to track the issue.
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Patrick Alken <=