sysdeps/powerpc/powerpc32/power6/fpu/s_copysign.S

   1 /* copysign().  PowerPC32/POWER6 version.
   2    Copyright (C) 2010-2018 Free Software Foundation, Inc.
   3    Contributed by Luis Machado <luisgpm@br.ibm.com>.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <sysdep.h>
  21 #include <math_ldbl_opt.h>
  22 #include <libm-alias-float.h>
  23 #include <libm-alias-double.h>
  24
  25 /* double [f1] copysign (double [f1] x, double [f2] y);
  26    copysign(x,y) returns a value with the magnitude of x and
  27    with the sign bit of y.  */
  28
  29         .section    ".text"
  30         .type       __copysign, @function
  31         .machine    power6
  32 EALIGN (__copysign, 4, 0)
  33         CALL_MCOUNT
  34         fcpsgn  fp1,fp2,fp1
  35         blr
  36 END (__copysign)
  37
  38 hidden_def (__copysign)
  39 libm_alias_double (__copysign, copysign)
  40
  41 /* It turns out that the 'double' version will also always work for
  42    single-precision.  */
  43 strong_alias (__copysign, __copysignf)
  44 hidden_def (__copysignf)
  45 libm_alias_float (__copysign, copysign)
  46
  47 #if LONG_DOUBLE_COMPAT (libc, GLIBC_2_0)
  48 compat_symbol (libc, copysign, copysignl, GLIBC_2_0);
  49 #endif