sparc64/144900: commit references a PR

[dfilter service]

The following reply was made to PR sparc64/144900; it has been noted by GNATS.

From: dfilter at FreeBSD.ORG (dfilter service)
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: sparc64/144900: commit references a PR
Date: Tue, 30 Mar 2010 19:07:06 +0000 (UTC)

 Author: marius
 Date: Tue Mar 30 19:06:33 2010
 New Revision: 205897
 URL: http://svn.freebsd.org/changeset/base/205897
 
 Log:
   MFC: r205396
   
   Division should take both arguments' signs into account when the
   the dividend is infinity or zero and the divisor is not the same.
   
   PR:		144900
   Submitted by:	Peter Jeremy
 
 Modified:
   stable/7/lib/libc/sparc64/fpu/fpu_div.c
 Directory Properties:
   stable/7/lib/libc/   (props changed)
   stable/7/lib/libc/stdtime/   (props changed)
 
 Modified: stable/7/lib/libc/sparc64/fpu/fpu_div.c
 ==============================================================================
 --- stable/7/lib/libc/sparc64/fpu/fpu_div.c	Tue Mar 30 19:06:31 2010	(r205896)
 +++ stable/7/lib/libc/sparc64/fpu/fpu_div.c	Tue Mar 30 19:06:33 2010	(r205897)
 @@ -167,14 +167,16 @@ __fpu_div(fe)
  	 * return it.  Otherwise we have the following cases:
  	 *
  	 *	Inf / Inf = NaN, plus NV exception
 -	 *	Inf / num = Inf [i.e., return x]
 -	 *	Inf / 0   = Inf [i.e., return x]
 -	 *	0 / Inf = 0 [i.e., return x]
 -	 *	0 / num = 0 [i.e., return x]
 +	 *	Inf / num = Inf [i.e., return x #]
 +	 *	Inf / 0   = Inf [i.e., return x #]
 +	 *	0 / Inf = 0 [i.e., return x #]
 +	 *	0 / num = 0 [i.e., return x #]
  	 *	0 / 0   = NaN, plus NV exception
 -	 *	num / Inf = 0
 +	 *	num / Inf = 0 #
  	 *	num / num = num (do the divide)
 -	 *	num / 0   = Inf, plus DZ exception
 +	 *	num / 0   = Inf #, plus DZ exception
 +	 *
 +	 * # Sign of result is XOR of operand signs.
  	 */
  	if (ISNAN(x) || ISNAN(y)) {
  		ORDER(x, y);
 @@ -183,10 +185,10 @@ __fpu_div(fe)
  	if (ISINF(x) || ISZERO(x)) {
  		if (x->fp_class == y->fp_class)
  			return (__fpu_newnan(fe));
 +		x->fp_sign ^= y->fp_sign;
  		return (x);
  	}
  
 -	/* all results at this point use XOR of operand signs */
  	x->fp_sign ^= y->fp_sign;
  	if (ISINF(y)) {
  		x->fp_class = FPC_ZERO;
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