From: Aurelien Jarno <aurelien@aurel32.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [6046] target-ppc: use a correct value to represent 1.0
Date: Mon, 15 Dec 2008 17:13:48 +0000 [thread overview]
Message-ID: <E1LCH0u-0002oj-MT@cvs.savannah.gnu.org> (raw)
Revision: 6046
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6046
Author: aurel32
Date: 2008-12-15 17:13:48 +0000 (Mon, 15 Dec 2008)
Log Message:
-----------
target-ppc: use a correct value to represent 1.0
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Modified Paths:
--------------
trunk/target-ppc/op_helper.c
Modified: trunk/target-ppc/op_helper.c
===================================================================
--- trunk/target-ppc/op_helper.c 2008-12-15 17:13:39 UTC (rev 6045)
+++ trunk/target-ppc/op_helper.c 2008-12-15 17:13:48 UTC (rev 6046)
@@ -1517,7 +1517,8 @@
/* fre - fre. */
uint64_t helper_fre (uint64_t arg)
{
- CPU_DoubleU farg;
+ CPU_DoubleU fone, farg;
+ fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@@ -1525,9 +1526,9 @@
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(farg.d))) {
/* Zero reciprocal */
- farg.ll = float_zero_divide_excp(1.0, farg.d);
+ farg.ll = float_zero_divide_excp(fone.d, farg.d);
} else if (likely(isnormal(farg.d))) {
- farg.d = float64_div(1.0, farg.d, &env->fp_status);
+ farg.d = float64_div(fone.d, farg.d, &env->fp_status);
} else {
if (farg.ll == 0x8000000000000000ULL) {
farg.ll = 0xFFF0000000000000ULL;
@@ -1547,7 +1548,8 @@
/* fres - fres. */
uint64_t helper_fres (uint64_t arg)
{
- CPU_DoubleU farg;
+ CPU_DoubleU fone, farg;
+ fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@@ -1555,13 +1557,13 @@
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSNAN);
} else if (unlikely(iszero(farg.d))) {
/* Zero reciprocal */
- farg.ll = float_zero_divide_excp(1.0, farg.d);
+ farg.ll = float_zero_divide_excp(fone.d, farg.d);
} else if (likely(isnormal(farg.d))) {
#if USE_PRECISE_EMULATION
- farg.d = float64_div(1.0, farg.d, &env->fp_status);
+ farg.d = float64_div(fone.d, farg.d, &env->fp_status);
farg.d = float64_to_float32(farg.d, &env->fp_status);
#else
- farg.d = float32_div(1.0, farg.d, &env->fp_status);
+ farg.d = float32_div(fone.d, farg.d, &env->fp_status);
#endif
} else {
if (farg.ll == 0x8000000000000000ULL) {
@@ -1582,7 +1584,8 @@
/* frsqrte - frsqrte. */
uint64_t helper_frsqrte (uint64_t arg)
{
- CPU_DoubleU farg;
+ CPU_DoubleU fone, farg;
+ fone.ll = 0x3FF0000000000000ULL;
farg.ll = arg;
if (unlikely(float64_is_signaling_nan(farg.d))) {
@@ -1593,7 +1596,7 @@
farg.ll = fload_invalid_op_excp(POWERPC_EXCP_FP_VXSQRT);
} else if (likely(isnormal(farg.d))) {
farg.d = float64_sqrt(farg.d, &env->fp_status);
- farg.d = float32_div(1.0, farg.d, &env->fp_status);
+ farg.d = float32_div(fone.d, farg.d, &env->fp_status);
} else {
if (farg.ll == 0x8000000000000000ULL) {
farg.ll = 0xFFF0000000000000ULL;
reply other threads:[~2008-12-15 17:13 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=E1LCH0u-0002oj-MT@cvs.savannah.gnu.org \
--to=aurelien@aurel32.net \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).