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Re: What is acceptable for -ffast-math? (Was: associative law in combine)
Alexandre Oliva <aoliva@redhat.com> writes:
| On Jul 30, 2001, Gabriel Dos Reis <gdr@codesourcery.com> wrote:
|
| > I'm puzzled to see "optimization" used to designate a transformation
| > applying dubious rules to transmute the meaning of a computation :-(
|
| In what sense is this different from Fortran's rules on parentheses?
The C/C++ Standard, for example, say that a/b/c is evaluated as
(a/b)/c. Someone proposed that it should be evaluated as a/(b*c)
-- which of course is incorrect -- when optimizing.
-- Gaby