From owner-cvs-all  Thu Nov 14  9: 8:35 2002
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 5632137B401; Thu, 14 Nov 2002 09:08:34 -0800 (PST)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 1CE5C43E7B; Thu, 14 Nov 2002 09:08:34 -0800 (PST)
	(envelope-from robert@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.12.6/8.12.6) with ESMTP id gAEH61mV069352;
	Thu, 14 Nov 2002 09:06:01 -0800 (PST)
	(envelope-from robert@repoman.freebsd.org)
Received: (from robert@localhost)
	by repoman.freebsd.org (8.12.6/8.12.6/Submit) id gAEH61aK069351;
	Thu, 14 Nov 2002 09:06:01 -0800 (PST)
Message-Id: <200211141706.gAEH61aK069351@repoman.freebsd.org>
From: Robert Drehmel <robert@FreeBSD.org>
Date: Thu, 14 Nov 2002 09:06:01 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/lib/libc/stdlib strtod.c
X-FreeBSD-CVS-Branch: HEAD
Sender: owner-cvs-all@FreeBSD.ORG
Precedence: bulk
List-ID: <cvs-all.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20cvs-all>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20cvs-all>
X-Loop: FreeBSD.ORG

robert      2002/11/14 09:06:01 PST

  Modified files:
    lib/libc/stdlib      strtod.c 
  Log:
  Define `Sudden_Underflow' when compiling for the Alpha
  architecture, mainly to avoid getting a SIGFPE signal sent
  when calling strtod(3) with certain input.
  
  The SIGFPE has been sent because the code was not aware that
  a Gradual Underflow is handled in software via traps on the
  Alpha architecture, but is not implemented in our Alpha kernel
  layer.
  
  With `Sudden_Underflow' defined, strtod(3) should not depend
  on Gradual Underflow and adjust its calculations accordingly,
  which means that other, more subtle errors than the sending of
  SIGFPE could be solved by this.
  
  Discussed with: bde
  PR:             alpha/12623
  PR:             alpha/17032
  PR:             alpha/43567
  MFC after:      7 days
  
  Revision  Changes    Path
  1.25      +3 -0      src/lib/libc/stdlib/strtod.c

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message