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| author | Luis Machado <luisgpm@br.ibm.com> | 2010-07-15 08:24:40 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2010-07-15 08:24:40 -0700 |
| commit | 77c1b06986d9ce8aacee8ea734ba42e635d79b2f (patch) | |
| tree | ad4ff5855917703b96d4c6ea35de0ee195c4cc73 /sysdeps/powerpc/powerpc64 | |
| parent | b08c89d9f36dea19634f6e59cc839f920b827116 (diff) | |
| download | glibc-77c1b06986d9ce8aacee8ea734ba42e635d79b2f.tar.gz glibc-77c1b06986d9ce8aacee8ea734ba42e635d79b2f.tar.xz glibc-77c1b06986d9ce8aacee8ea734ba42e635d79b2f.zip | |
POWER6/7 optimizations for copysign
Diffstat (limited to 'sysdeps/powerpc/powerpc64')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S | 56 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S | 1 |
2 files changed, 57 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S new file mode 100644 index 0000000000..0ff84d26e2 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysign.S @@ -0,0 +1,56 @@ +/* copysign(). PowerPC64/POWER6 version. + Copyright (C) 2010 Free Software Foundation, Inc. + Contributed by Luis Machado <luisgpm@br.ibm.com>. + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <sysdep.h> +#include <math_ldbl_opt.h> + +/* double [f1] copysign (double [f1] x, double [f2] y); + copysign(x,y) returns a value with the magnitude of x and + with the sign bit of y. */ + + .section ".text" + .type __copysign, @function + .machine power6 +EALIGN (__copysign, 4, 0) + CALL_MCOUNT 0 + fcpsgn fp1,fp2,fp1 + blr +END (__copysign) + +hidden_def (__copysign) +weak_alias (__copysign, copysign) + +/* It turns out that the 'double' version will also always work for + single-precision. */ +strong_alias (__copysign, __copysignf) +hidden_def (__copysignf) +weak_alias (__copysignf, copysignf) + +#ifdef NO_LONG_DOUBLE +strong_alias (__copysign, __copysignl) +weak_alias (__copysign, copysignl) +#endif + +#ifndef IS_IN_libm +# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0) +compat_symbol (libc, __copysign, __copysignl, GLIBC_2_0); +compat_symbol (libc, copysign, copysignl, GLIBC_2_0); +# endif +#endif diff --git a/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S new file mode 100644 index 0000000000..00f09ac610 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power6/fpu/s_copysignf.S @@ -0,0 +1 @@ +/* This function uses the same code as s_copysign.S. */ |