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From: Steve Kargl <kargl@FreeBSD.org>
Date: Sun, 13 Jul 2014 23:10:40 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r268597 - head/lib/msun/src
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Author: kargl
Date: Sun Jul 13 23:10:39 2014
New Revision: 268597
URL: http://svnweb.freebsd.org/changeset/base/268597

Log:
  * Update the comments to agree with commit r226595.
  
  * While here, fix a nearby typo in a comment.

Modified:
  head/lib/msun/src/e_pow.c

Modified: head/lib/msun/src/e_pow.c
==============================================================================
--- head/lib/msun/src/e_pow.c	Sun Jul 13 17:52:07 2014	(r268596)
+++ head/lib/msun/src/e_pow.c	Sun Jul 13 23:10:39 2014	(r268597)
@@ -19,20 +19,20 @@ __FBSDID("$FreeBSD$");
  *	1. Compute and return log2(x) in two pieces:
  *		log2(x) = w1 + w2,
  *	   where w1 has 53-24 = 29 bit trailing zeros.
- *	2. Perform y*log2(x) = n+y' by simulating muti-precision 
+ *	2. Perform y*log2(x) = n+y' by simulating multi-precision 
  *	   arithmetic, where |y'|<=0.5.
  *	3. Return x**y = 2**n*exp(y'*log2)
  *
  * Special cases:
  *	1.  (anything) ** 0  is 1
  *	2.  (anything) ** 1  is itself
- *	3.  (anything) ** NAN is NAN
+ *	3.  (anything) ** NAN is NAN except 1 ** NAN = 1
  *	4.  NAN ** (anything except 0) is NAN
  *	5.  +-(|x| > 1) **  +INF is +INF
  *	6.  +-(|x| > 1) **  -INF is +0
  *	7.  +-(|x| < 1) **  +INF is +0
  *	8.  +-(|x| < 1) **  -INF is +INF
- *	9.  +-1         ** +-INF is NAN
+ *	9.  +-1         ** +-INF is 1
  *	10. +0 ** (+anything except 0, NAN)               is +0
  *	11. -0 ** (+anything except 0, NAN, odd integer)  is +0
  *	12. +0 ** (-anything except 0, NAN)               is +INF
@@ -141,7 +141,7 @@ __ieee754_pow(double x, double y)
 	if(ly==0) { 	
 	    if (iy==0x7ff00000) {	/* y is +-inf */
 	        if(((ix-0x3ff00000)|lx)==0)
-		    return  one;	/* (-1)**+-inf is NaN */
+		    return  one;	/* (-1)**+-inf is 1 */
 	        else if (ix >= 0x3ff00000)/* (|x|>1)**+-inf = inf,0 */
 		    return (hy>=0)? y: zero;
 	        else			/* (|x|<1)**-,+inf = inf,0 */