On Sun, 8 Mar 2009, Richard Guenther wrote: > We try to have a sensible default setting that doesn't prevent constant > folding (which -frounding-math does).
-ftrapping-math implemented according to its specification would prevent a lot of constant folding (at least, the "inexact" and other exceptions from constant expressions not in static initializers should be preserved, although you could fold a complicated expression down to a simpler one that still gives the right set of exceptions). I suspect we might therefore end up wanting a weaker version of -ftrapping-math as the default with the full present specification of -ftrapping-math not being the default if it gets implemented. -- Joseph S. Myers jos...@codesourcery.com
