svn commit: r251338 - in head/lib/msun: ld128 ld80

[Steve Kargl]

Author: kargl
Date: Mon Jun  3 18:57:35 2013
New Revision: 251338
URL: http://svnweb.freebsd.org/changeset/base/251338

Log:
  Micro-optimization: move the unary mius operator to operate
  on a literal constant.
  
  Obtained from:	bde

Modified:
  head/lib/msun/ld128/s_expl.c
  head/lib/msun/ld80/s_expl.c

Modified: head/lib/msun/ld128/s_expl.c
==============================================================================
--- head/lib/msun/ld128/s_expl.c	Mon Jun  3 18:53:40 2013	(r251337)
+++ head/lib/msun/ld128/s_expl.c	Mon Jun  3 18:57:35 2013	(r251338)
@@ -261,7 +261,7 @@ expl(long double x)
 	n2 = (unsigned)n % INTERVALS;
 	k = n >> LOG2_INTERVALS;
 	r1 = x - fn * L1;
-	r2 = -fn * L2;
+	r2 = fn * -L2;
 
 	/* Prepare scale factors. */
 	v.xbits.manh = 0;

Modified: head/lib/msun/ld80/s_expl.c
==============================================================================
--- head/lib/msun/ld80/s_expl.c	Mon Jun  3 18:53:40 2013	(r251337)
+++ head/lib/msun/ld80/s_expl.c	Mon Jun  3 18:57:35 2013	(r251338)
@@ -275,10 +275,10 @@ expl(long double x)
 	/* Depend on the sign bit being propagated: */
 	k = n >> LOG2_INTERVALS;
 	r1 = x - fn * L1;
-	r2 = -fn * L2;
+	r2 = fn * -L2;
 
 	/* Prepare scale factors. */
-	v.xbits.man = 1ULL << 63;
+	v.e = 1ULL << 63;
 	if (k >= LDBL_MIN_EXP) {
 		v.xbits.expsign = BIAS + k;
 		twopk = v.e;