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Re: [libgfortran] PR 16137: libgfortran on non-C99 targets
On Fri, Aug 06, 2004 at 10:04:47PM +0200, Toon Moene wrote:
> I put this question up to J3. I think the answer might not be the
> obvious, although the most senior member in charge of floating point
> behaviour differs with my interpretation, especially with regard to the
> question whether a processor that sqaushes all denormals to zero is
> standard conforming (I think it is, he thinks it isn't).
Seems to me that if the system reliably squashes all denormals, that
that is a consistent machine model for the arithmetic, and so is
The problem would come when you've got a bit to flip at runtime,
and it only eliminates *some* of the denormals. E.g. this NEAREST
thing, where one might do the computation in integer modes, and so
generate a number that you couldn't generate with actual fp