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[PATCH][BZ #14412] Define __sincos_finite as a fast version of sincos
- From: Siddhesh Poyarekar <siddhesh at redhat dot com>
- To: libc-alpha at sourceware dot org
- Cc: libc-ports at sourceware dot org
- Date: Mon, 29 Apr 2013 15:57:40 +0530
- Subject: [PATCH][BZ #14412] Define __sincos_finite as a fast version of sincos
Hi,
The assembly implementation of sincos on x86_64 was removed in favour
of the default implementation since the former was inaccurate for some
inputs. This led to BZ #14412 being reported for a performance
regression in sincos.
This patch brings back the assembly implementation of sincos (with
some changes) to give a fast alternative to the default sincos
implementation. This is defined as __sincos_finite and is used if the
implementing program is compiled with the -ffinite-math-only gcc flag.
I have tested that this works correctly for x86_64 and i686, where the
former uses the assembly implementation of __sincos_finite and the
latter uses the weak alias to sincos. I have also verified that there
are no regressions in the testsuite on x86_64.
The patch also has changes to m68k and ia64 (in addition to the
abilist update) since they have custom implementations of sincos. I
have not tested those, so I would request the maintainers to let me
know if the changes break anything on their architectures.
Siddhesh
[BZ #14412]
* math/Versions (GLIBC_2.18): Add __sincos_finite.
* math/bits/math-finite.h: Add prototype for __sincos_finite.
* sysdeps/unix/sysv/linux/i386/nptl/libm.abilist: Add
__sincos_finite.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-32/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/s390/s390-64/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/sh/nptl/libm.abilist: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/x86_64/64/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/nptl/libm.abilist:
Likewise.
* sysdeps/ieee754/dbl-64/s_sincos.c [!_FINITE_DEFINED]: Add
weak alias __sincos_finite for __sincos.
* sysdeps/x86_64/fpu/Makefile: New file.
* sysdeps/x86_64/fpu/s_sincos_finite.S: New file.
ChangeLog.ia64:
[BZ #14412]
* sysdeps/ia64/fpu/libm_sincos.S: Include sysdep.h. Add weak
alias __sincos_finite.
* sysdeps/unix/sysv/linux/ia64/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.m68k:
[BZ #14412]
* sysdeps/m68k/m680x0/fpu/s_sincos.c: Add weak alias
__sincos_finite.
* sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libm.abilist: Add
__sincos_finite.
* sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.aarch64:
[BZ #14412]
* sysdeps/unix/sysv/linux/aarch64/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.alpha:
[BZ #14412]
* sysdeps/unix/sysv/linux/alpha/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.arm:
[BZ #14412]
* sysdeps/unix/sysv/linux/arm/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.microblaze:
[BZ #14412]
* sysdeps/unix/sysv/linux/microblaze/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.mips:
[BZ #14412]
* sysdeps/unix/sysv/linux/mips/mips32/nptl/libm.abilist: Add
__sincos_finite.
* sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libm.abilist:
Likewise.
ChangeLog.powerpc:
[BZ #14412]
* sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist: Add
__sincos_finite.
ChangeLog.tile.
[BZ #14412]
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libm.abilist: Add
__sincos_finite.
* sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libm.abilist:
Likewise.
* sysdeps/unix/sysv/linux/tile/tilepro/nptl/libm.abilist:
Likewise.
diff --git a/math/Versions b/math/Versions
index 513ab14..34230fc 100644
--- a/math/Versions
+++ b/math/Versions
@@ -200,5 +200,6 @@ libm {
}
GLIBC_2.18 {
__issignaling; __issignalingf; __issignalingl;
+ __sincos_finite;
}
}
diff --git a/math/bits/math-finite.h b/math/bits/math-finite.h
index 6888462..d8cc010 100644
--- a/math/bits/math-finite.h
+++ b/math/bits/math-finite.h
@@ -451,4 +451,8 @@ __extern_always_inline long double __NTH (tgammal (long double __d))
return __local_signgam < 0 ? -__res : __res;
}
# endif
+
+/* sincos. */
+extern void __REDIRECT_NTH (sincos, (double, double *, double *),
+ __sincos_finite);
#endif
diff --git a/ports/sysdeps/ia64/fpu/libm_sincos.S b/ports/sysdeps/ia64/fpu/libm_sincos.S
index 7fda2af..4aa4e20 100644
--- a/ports/sysdeps/ia64/fpu/libm_sincos.S
+++ b/ports/sysdeps/ia64/fpu/libm_sincos.S
@@ -177,6 +177,8 @@
// f9 -> f15
// f32 -> f67
+#include <sysdep.h>
+
// Assembly macros
//==============================================================
@@ -781,3 +783,4 @@ _CIS_LARGE_ARGS:
.type __libm_sincos_large#,@function
.global __libm_sincos_large#
+weak_alias (__sincos_finite, sincos)
diff --git a/ports/sysdeps/m68k/m680x0/fpu/s_sincos.c b/ports/sysdeps/m68k/m680x0/fpu/s_sincos.c
index 41b64aa..94af532 100644
--- a/ports/sysdeps/m68k/m680x0/fpu/s_sincos.c
+++ b/ports/sysdeps/m68k/m680x0/fpu/s_sincos.c
@@ -33,3 +33,4 @@ CONCATX(__,FUNC) (x, sinx, cosx)
__m81_u(CONCATX(__,FUNC))(x, sinx, cosx);
}
weak_alias (CONCATX(__,FUNC), FUNC)
+weak_alias (CONCATX(CONCATX(__, FUNC), finite), FUNC)
diff --git a/ports/sysdeps/unix/sysv/linux/aarch64/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/libm.abilist
index 0f1cfc8..f83d90b 100644
--- a/ports/sysdeps/unix/sysv/linux/aarch64/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/aarch64/nptl/libm.abilist
@@ -400,3 +400,4 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
diff --git a/ports/sysdeps/unix/sysv/linux/alpha/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/alpha/nptl/libm.abilist
index 400a851..03c6bc9 100644
--- a/ports/sysdeps/unix/sysv/linux/alpha/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/alpha/nptl/libm.abilist
@@ -396,6 +396,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
feclearexcept F
diff --git a/ports/sysdeps/unix/sysv/linux/arm/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/arm/nptl/libm.abilist
index 614e5eb..c815c39 100644
--- a/ports/sysdeps/unix/sysv/linux/arm/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/arm/nptl/libm.abilist
@@ -58,6 +58,7 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
GLIBC_2.4
GLIBC_2.4 A
_LIB_VERSION D 0x4
diff --git a/ports/sysdeps/unix/sysv/linux/ia64/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/ia64/nptl/libm.abilist
index db8b279..0b2e36e 100644
--- a/ports/sysdeps/unix/sysv/linux/ia64/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/ia64/nptl/libm.abilist
@@ -23,6 +23,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
_LIB_VERSION D 0x4
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libm.abilist
index 614e5eb..c815c39 100644
--- a/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/m68k/coldfire/nptl/libm.abilist
@@ -58,6 +58,7 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
GLIBC_2.4
GLIBC_2.4 A
_LIB_VERSION D 0x4
diff --git a/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libm.abilist
index 0beecb7..aed17c0 100644
--- a/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/m68k/m680x0/nptl/libm.abilist
@@ -401,6 +401,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
feclearexcept F
diff --git a/ports/sysdeps/unix/sysv/linux/microblaze/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/microblaze/nptl/libm.abilist
index 8d6327c..c932e98 100644
--- a/ports/sysdeps/unix/sysv/linux/microblaze/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/microblaze/nptl/libm.abilist
@@ -57,6 +57,7 @@ GLIBC_2.18
__scalbf_finite F
__signbit F
__signbitf F
+ __sincos_finite F
__sinh_finite F
__sinhf_finite F
__sqrt_finite F
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libm.abilist
index 5381246..5fb61ea 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips32/nptl/libm.abilist
@@ -216,6 +216,7 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
__clog10 F
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libm.abilist
index bb39795..9806dba 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n32/nptl/libm.abilist
@@ -244,6 +244,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
__clog10 F
diff --git a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libm.abilist
index bb39795..9806dba 100644
--- a/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/mips/mips64/n64/nptl/libm.abilist
@@ -244,6 +244,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
__clog10 F
diff --git a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist
index 9bd593c..8bce9a7 100644
--- a/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/nptl/libm.abilist
@@ -401,6 +401,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
feclearexcept F
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libm.abilist
index cb0d1a4..e5dd02c 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/nptl/libm.abilist
@@ -371,3 +371,4 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libm.abilist
index cb0d1a4..e5dd02c 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/nptl/libm.abilist
@@ -371,3 +371,4 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
diff --git a/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libm.abilist b/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libm.abilist
index cb0d1a4..e5dd02c 100644
--- a/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libm.abilist
+++ b/ports/sysdeps/unix/sysv/linux/tile/tilepro/nptl/libm.abilist
@@ -371,3 +371,4 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
diff --git a/sysdeps/ieee754/dbl-64/s_sincos.c b/sysdeps/ieee754/dbl-64/s_sincos.c
index b6d5432..fec8793 100644
--- a/sysdeps/ieee754/dbl-64/s_sincos.c
+++ b/sysdeps/ieee754/dbl-64/s_sincos.c
@@ -44,6 +44,9 @@ __sincos (double x, double *sinx, double *cosx)
}
}
weak_alias (__sincos, sincos)
+#if _FINITE_DEFINED == 0
+weak_alias (__sincos, __sincos_finite)
+#endif
#ifdef NO_LONG_DOUBLE
strong_alias (__sincos, __sincosl)
weak_alias (__sincos, sincosl)
diff --git a/sysdeps/unix/sysv/linux/i386/nptl/libm.abilist b/sysdeps/unix/sysv/linux/i386/nptl/libm.abilist
index c185f0b..16deb22 100644
--- a/sysdeps/unix/sysv/linux/i386/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/i386/nptl/libm.abilist
@@ -401,6 +401,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
__expl F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libm.abilist
index 76a4ba3..ee3b642 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/nptl/libm.abilist
@@ -402,6 +402,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
feclearexcept F
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libm.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libm.abilist
index d309a6f..146f912 100644
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/nptl/libm.abilist
@@ -86,6 +86,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.3
GLIBC_2.3 A
_LIB_VERSION D 0x4
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libm.abilist
index f836c90..6b1b25e 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/nptl/libm.abilist
@@ -398,6 +398,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
fedisableexcept F
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libm.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libm.abilist
index a0891ad..235fe94 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/nptl/libm.abilist
@@ -86,6 +86,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
_LIB_VERSION D 0x4
diff --git a/sysdeps/unix/sysv/linux/sh/nptl/libm.abilist b/sysdeps/unix/sysv/linux/sh/nptl/libm.abilist
index 92821fd..963d1ce 100644
--- a/sysdeps/unix/sysv/linux/sh/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sh/nptl/libm.abilist
@@ -58,6 +58,7 @@ GLIBC_2.18
GLIBC_2.18 A
__issignaling F
__issignalingf F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
_LIB_VERSION D 0x4
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libm.abilist
index 9a1fcb1..5643ed7 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/nptl/libm.abilist
@@ -393,6 +393,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
feclearexcept F
diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libm.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libm.abilist
index 2b41d34..a4404fe 100644
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/nptl/libm.abilist
@@ -86,6 +86,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2
GLIBC_2.2 A
_LIB_VERSION D 0x4
diff --git a/sysdeps/unix/sysv/linux/x86_64/64/nptl/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/64/nptl/libm.abilist
index 2390934..ae87e2b 100644
--- a/sysdeps/unix/sysv/linux/x86_64/64/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/nptl/libm.abilist
@@ -86,6 +86,7 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
GLIBC_2.2.5
GLIBC_2.2.5 A
_LIB_VERSION D 0x4
diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libm.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libm.abilist
index 1825adb..0eb2484 100644
--- a/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libm.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/nptl/libm.abilist
@@ -400,3 +400,4 @@ GLIBC_2.18
__issignaling F
__issignalingf F
__issignalingl F
+ __sincos_finite F
diff --git a/sysdeps/x86_64/fpu/Makefile b/sysdeps/x86_64/fpu/Makefile
new file mode 100644
index 0000000..623c7aa
--- /dev/null
+++ b/sysdeps/x86_64/fpu/Makefile
@@ -0,0 +1,5 @@
+ifeq ($(subdir),math)
+libm-sysdep_routines += s_sincos_finite
+
+CFLAGS=s_sincos = -D_FINITE_DEFINED=1
+endif
diff --git a/sysdeps/x86_64/fpu/s_sincos_finite.S b/sysdeps/x86_64/fpu/s_sincos_finite.S
new file mode 100644
index 0000000..b9b8870
--- /dev/null
+++ b/sysdeps/x86_64/fpu/s_sincos_finite.S
@@ -0,0 +1,48 @@
+/* Compute sine and cosine of argument, fast and not so accurate version.
+ Copyright (C) 2013 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <machine/asm.h>
+
+ .text
+ENTRY (__sincos_finite)
+
+ movsd %xmm0, -8(%rsp)
+ fldl -8(%rsp)
+ fsincos
+ fnstsw %ax
+ testl $0x400,%eax
+ jnz 1f
+ fstpl (%rsi)
+ fstpl (%rdi)
+
+ retq
+
+1: fldpi
+ fadd %st(0)
+ fxch %st(1)
+2: fprem1
+ fnstsw %ax
+ testl $0x400,%eax
+ jnz 2b
+ fstp %st(1)
+ fsincos
+ fstpl (%rsi)
+ fstpl (%rdi)
+
+ retq
+END (__sincos_finite)