[src/trunk]: src/sys/arch/powerpc/fpu fpu_mul(): Do not multiply sign bits fo...

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

details:   https://anonhg.NetBSD.org/src/rev/d4bebc8255e2
branches:  trunk
changeset: 369894:d4bebc8255e2
user:      rin <rin%NetBSD.org@localhost>
date:      Tue Sep 06 23:05:52 2022 +0000

description:
fpu_mul(): Do not multiply sign bits for NaN.

diffstat:

 sys/arch/powerpc/fpu/fpu_mul.c |  7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diffs (28 lines):

diff -r 8912bb16b831 -r d4bebc8255e2 sys/arch/powerpc/fpu/fpu_mul.c
--- a/sys/arch/powerpc/fpu/fpu_mul.c    Tue Sep 06 23:04:08 2022 +0000
+++ b/sys/arch/powerpc/fpu/fpu_mul.c    Tue Sep 06 23:05:52 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fpu_mul.c,v 1.7 2022/09/06 23:04:08 rin Exp $ */
+/*     $NetBSD: fpu_mul.c,v 1.8 2022/09/06 23:05:52 rin Exp $ */
 
 /*
  * Copyright (c) 1992, 1993
@@ -45,7 +45,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fpu_mul.c,v 1.7 2022/09/06 23:04:08 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fpu_mul.c,v 1.8 2022/09/06 23:05:52 rin Exp $");
 
 #include <sys/types.h>
 #if defined(DIAGNOSTIC)||defined(DEBUG)
@@ -135,8 +135,7 @@
                if (ISSNAN(x) || ISSNAN(y))
                        fe->fe_cx |= FPSCR_VXSNAN;
                if (ISNAN(x))
-                       SWAP(x, y);
-               y->fp_sign ^= x->fp_sign;
+                       y = x;
                DUMPFPN(FPE_REG, y);
                return (y);
        }