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Re: Fix fp-bit.c corner case

From: Andreas Jaeger <aj at suse dot de>
To: gcc-patches at gcc dot gnu dot org
Date: Fri, 17 Oct 2003 09:49:04 +0200
Subject: Re: Fix fp-bit.c corner case
References: <20031017072826.GE24720@bubble.sa.bigpond.net.au>

Alan Modra <amodra@bigpond.net.au> writes:

> This fixes a couple of fp-bit.c corner cases I noticed.  In pack_d, I
> believe it's possible for rounding to bump the exponent, leading to a
> NaN being generated rather than Inf.  Moving the exponent overflow check
> later catches this case.  Note that EXPMAX == 2*EXPBIAS+1 in all fp
> formats, so testing (exp = src->normal_exp + EXPBIAS) >= EXPMAX is
> equivalent to testing src->normal_exp > EXPBIAS.

Do you have any testcase for this that can be added to the testsuite?

Andreas
-- 
 Andreas Jaeger, aj@suse.de, http://www.suse.de/~aj
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