Re: What is acceptable for -ffast-math? (Was: associative law in combine)

[Gabriel Dos Reis <gdr at codesourcery dot com>]

Olivier Galibert <galibert@pobox.com> writes:

| There is a whole world of users there outside of numerical
| computations as the physicist understand them.  And for them speed is
| important, and they know how to keep their values within the bounds
| that the compiler and the processor handle efficiently.  Don't go and
| cripple _them_.

I don't want to "cripple" them.  And, I don't think "cripple" is a fair
characterization. 

You seem to imply that for someone who does Image Analysis,
correctness is less important than speed.  I disagree, if that were
indeed your intent.  If you expect the compiler to evaluate a/b/c as
a/(b*c) then you would have written a/(b*c).  Wouldn't you?

And speed does matter for numerical programmers also.

-- Gaby