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Re: [PATCH] Fix exp2* on very small values

To: Jakub Jelinek <jakub at redhat dot com>
Subject: Re: [PATCH] Fix exp2* on very small values
From: Ulrich Drepper <drepper at redhat dot com>
Date: 05 Jun 2001 17:29:47 -0700
Cc: Glibc hackers <libc-hacker at sources dot redhat dot com>
References: <20010604151159.E1253@sunsite.ms.mff.cuni.cz>
Reply-To: drepper at cygnus dot com (Ulrich Drepper)

Jakub Jelinek <jakub@redhat.com> writes:

> The exp2* wrappers would signal underflow too early (they should do so when
> real underflow happens, not when the returned value would be denormal), on
> the other side __ieee754_exp* had the low threshold too small (arguments
> <= 2^(*_MIN_EXP - *_MANT_DIG - 1) underflow, while the code was testing
> arguments < 2^(*_MIN_EXP - *_MANT_DIG - 2)).

Seems OK.  Thanks,

-- 
---------------.                          ,-.   1325 Chesapeake Terrace
Ulrich Drepper  \    ,-------------------'   \  Sunnyvale, CA 94089 USA
Red Hat          `--' drepper at redhat.com   `------------------------

References:
- [PATCH] Fix exp2* on very small values
  - From: Jakub Jelinek

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