sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c

   1 /* Multiple versions of copysign.
   2    Copyright (C) 2013-2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Redefine copysign so that the compiler won't complain about the type
  20    mismatch with the IFUNC selector in strong_alias below.  */
  21 #undef __copysign
  22 #define __copysign __redirect_copysign
  23 #include <math.h>
  24 #include <math_ldbl_opt.h>
  25 #undef __copysign
  26 #include <shlib-compat.h>
  27 #include "init-arch.h"
  28 #include <libm-alias-double.h>
  29
  30 extern __typeof (__redirect_copysign) __copysign_ppc64 attribute_hidden;
  31 extern __typeof (__redirect_copysign) __copysign_power6 attribute_hidden;
  32
  33 extern __typeof (__redirect_copysign) __libm_copysign;
  34 libc_ifunc (__libm_copysign,
  35             (hwcap & PPC_FEATURE_ARCH_2_05)
  36             ? __copysign_power6
  37             : __copysign_ppc64);
  38
  39 strong_alias (__libm_copysign, __copysign)
  40 libm_alias_double (__copysign, copysign)
  41
  42 #if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
  43 compat_symbol (libc, __copysign, copysignl, GLIBC_2_0);
  44 #endif