aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2008-04-12 03:39:30 +0000
committerUlrich Drepper <drepper@redhat.com>2008-04-12 03:39:30 +0000
commitc3a0ead420b4b2a4098cf0afea8f927094f5abbc (patch)
treed2f8c0fdf848bc25f1eb6ef417bae609cd3da8db
parent3cc56f9208123c12aaf9fdd96de9d880749cfd8f (diff)
downloadglibc-c3a0ead420b4b2a4098cf0afea8f927094f5abbc.tar
glibc-c3a0ead420b4b2a4098cf0afea8f927094f5abbc.tar.gz
glibc-c3a0ead420b4b2a4098cf0afea8f927094f5abbc.tar.bz2
glibc-c3a0ead420b4b2a4098cf0afea8f927094f5abbc.zip
* sysdeps/powerpc/fpu/e_sqrt.c: Avoid call to fetestexcept.
* sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
-rw-r--r--ChangeLog3
-rw-r--r--sysdeps/powerpc/fpu/e_sqrt.c8
-rw-r--r--sysdeps/powerpc/fpu/e_sqrtf.c8
3 files changed, 13 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog
index 521ad3915c..c721e86831 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
2008-04-11 Ulrich Drepper <drepper@redhat.com>
+ * sysdeps/powerpc/fpu/e_sqrt.c: Avoid call to fetestexcept.
+ * sysdeps/powerpc/fpu/e_sqrtf.c: Likewise.
+
* scripts/data/localplt-powerpc64-linux-gnu.data: New file.
* sysdeps/powerpc/fpu/fenv_libc.h: Add libm_hidden_proto for
diff --git a/sysdeps/powerpc/fpu/e_sqrt.c b/sysdeps/powerpc/fpu/e_sqrt.c
index 540b924656..24e0dd3523 100644
--- a/sysdeps/powerpc/fpu/e_sqrt.c
+++ b/sysdeps/powerpc/fpu/e_sqrt.c
@@ -1,5 +1,5 @@
/* Double-precision floating point square root.
- Copyright (C) 1997, 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2002, 2003, 2004, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -150,7 +150,9 @@ __slow_ieee754_sqrt (x)
FE_INVALID_SQRT. */
#ifdef FE_INVALID_SQRT
feraiseexcept (FE_INVALID_SQRT);
- if (!fetestexcept (FE_INVALID))
+
+ fenv_union_t u = { .fenv = fegetenv_register () };
+ if ((u.l[1] & FE_INVALID) == 0)
#endif
feraiseexcept (FE_INVALID);
x = a_nan.value;
@@ -172,7 +174,7 @@ __ieee754_sqrt (x)
/* If the CPU is 64-bit we can use the optional FP instructions. */
if (__CPU_HAS_FSQRT)
{
- /* Volatile is required to prevent the compiler from moving the
+ /* Volatile is required to prevent the compiler from moving the
fsqrt instruction above the branch. */
__asm __volatile (" fsqrt %0,%1\n"
:"=f" (z):"f" (x));
diff --git a/sysdeps/powerpc/fpu/e_sqrtf.c b/sysdeps/powerpc/fpu/e_sqrtf.c
index b63d31472b..8e8138a17d 100644
--- a/sysdeps/powerpc/fpu/e_sqrtf.c
+++ b/sysdeps/powerpc/fpu/e_sqrtf.c
@@ -1,5 +1,5 @@
/* Single-precision floating point square root.
- Copyright (C) 1997, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1997, 2003, 2004, 2008 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -126,7 +126,9 @@ __slow_ieee754_sqrtf (x)
FE_INVALID_SQRT. */
#ifdef FE_INVALID_SQRT
feraiseexcept (FE_INVALID_SQRT);
- if (!fetestexcept (FE_INVALID))
+
+ fenv_union_t u = { .fenv = fegetenv_register () };
+ if ((u.l[1] & FE_INVALID) == 0)
#endif
feraiseexcept (FE_INVALID);
x = a_nan.value;
@@ -149,7 +151,7 @@ __ieee754_sqrtf (x)
/* If the CPU is 64-bit we can use the optional FP instructions. */
if (__CPU_HAS_FSQRT)
{
- /* Volatile is required to prevent the compiler from moving the
+ /* Volatile is required to prevent the compiler from moving the
fsqrt instruction above the branch. */
__asm __volatile (" fsqrts %0,%1\n"
:"=f" (z):"f" (x));