delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2009/11/17/09:30:13

X-Recipient: archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status: No, hits=-2.5 required=5.0 tests=AWL,BAYES_00,SPF_PASS
X-Spam-Check-By: sourceware.org
Message-ID: <4B02B6DF.3040007@gmail.com>
Date: Tue, 17 Nov 2009 14:44:47 +0000
From: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
User-Agent: Thunderbird 2.0.0.17 (Windows/20080914)
MIME-Version: 1.0
To: Dave Korn <dave DOT korn DOT cygwin AT googlemail DOT com>
CC: cygwin AT cygwin DOT com
Subject: Re: gcc -ffast-math defect with tan(x)
References: <AE5F3949C74C6547AEAEAB87D1AC7F1B057788A6 AT cos-us-mb01 DOT cos DOT agilent DOT com> <4B028ED0 DOT 5070600 AT gmail DOT com> <loom DOT 20091117T143159-735 AT post DOT gmane DOT org> <4B02B41A DOT 5010806 AT gmail DOT com>
In-Reply-To: <4B02B41A.5010806@gmail.com>
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

Dave Korn wrote:
> maybe _f_tan needs to be 'popping' (or in some way marking
> invalid) that unused +1.0 constant rather than just skipping the stack pointer
> over it.  

  Needs moar 'ffree st(0)'.

  This will require a newlib patch and a new cygwin dll release to solve,
it'll take a little while I'm afraid.

    cheers,
      DaveK

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019