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Re: negation of float on H8300

From: Alan Lehotsky <apl at alum dot mit dot edu>
To: "Sanjiv Kumar Gupta, Noida" <sanjivg at noida dot hcltech dot com>
Cc: Peter Barada <pbarada at mail dot wm dot sps dot mot dot com>, aph at cambridge dot redhat dot com,dhananjayd at kpit dot com, gnuh8 at gnuh8 dot org dot uk, gcc at gcc dot gnu dot org
Date: Wed, 7 Aug 2002 22:25:26 -0400
Subject: Re: negation of float on H8300
References: <E04CF3F88ACBD5119EFE00508BBB212103D93467@exch-01.noida.hcltech.com>

At 12:48 PM +0530 8/7/02, Sanjiv Kumar Gupta, Noida wrote:

Hi all,

I see a libcall ___negsf2 is being used by gcc for negation of floats on
H8300. Can't we just flip the first bit using bit insns provided in H8300?

That wouldn't handle NaNs correctly (assuming the H8300 is IEEE FP compliant...)

--
Carbon Design Systems, Inc.
apl@carbondesignsystems.com
(978)808-6836 Cell

Follow-Ups:
- Re: negation of float on H8300
  - From: Andreas Schwab

References:
- negation of float on H8300
  - From: Sanjiv Kumar Gupta, Noida

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