[src/trunk]: src/sys/arch/m68k/fpe FLOGNP1(-0.0) is -0.0, not +0.0. Found by...

[isaki <isaki%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7eda764fd65b
branches:  trunk
changeset: 325726:7eda764fd65b
user:      isaki <isaki%NetBSD.org@localhost>
date:      Sat Jan 04 13:23:22 2014 +0000

description:
FLOGNP1(-0.0) is -0.0, not +0.0.  Found by XM6i.

diffstat:

 sys/arch/m68k/fpe/fpu_log.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 8882fc4d6d08 -r 7eda764fd65b sys/arch/m68k/fpe/fpu_log.c
--- a/sys/arch/m68k/fpe/fpu_log.c       Sat Jan 04 12:36:49 2014 +0000
+++ b/sys/arch/m68k/fpe/fpu_log.c       Sat Jan 04 13:23:22 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fpu_log.c,v 1.17 2013/04/20 05:27:05 isaki Exp $       */
+/*     $NetBSD: fpu_log.c,v 1.18 2014/01/04 13:23:22 isaki Exp $       */
 
 /*
  * Copyright (c) 1995  Ken Nakata
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fpu_log.c,v 1.17 2013/04/20 05:27:05 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fpu_log.c,v 1.18 2014/01/04 13:23:22 isaki Exp $");
 
 #include <sys/types.h>
 #include <sys/systm.h>
@@ -593,6 +593,10 @@
 {
        struct fpn *fp;
 
+       /* if src is +0/-0, return +0/-0 */
+       if (ISZERO(&fe->fe_f2))
+               return &fe->fe_f2;
+
        /* build a 1.0 */
        fp = fpu_const(&fe->fe_f1, FPU_CONST_1);
        /* fp = 1.0 + f2 */