sysdeps/generic/libm-alias-float.h

   1 /* Define aliases for libm float functions.
   2    Copyright (C) 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 #ifndef _LIBM_ALIAS_FLOAT_H
  20 #define _LIBM_ALIAS_FLOAT_H
  21
  22 /* Define _FloatN / _FloatNx aliases for a float libm function that
  23    has internal name FROM ## f ## R and public names TO ## suffix ## R
  24    for each suffix of a supported _FloatN / _FloatNx floating-point
  25    type with the same format as float.  */
  26 #define libm_alias_float_other_r(from, to, r)
  27
  28 /* Likewise, but without the R suffix.  */
  29 #define libm_alias_float_other(from, to)        \
  30   libm_alias_float_other_r (from, to, )
  31
  32 /* Define aliases for a float libm function that has internal name
  33    FROM ## f ## R and public names TO ## suffix ## R for each suffix
  34    of a supported floating-point type with the same format as float.
  35    This should only be used for functions where such public names
  36    exist for _FloatN types, not for implementation-namespace exported
  37    names (where there is one name per format, not per type) or for
  38    obsolescent functions not provided for _FloatN types.  */
  39 #define libm_alias_float_r(from, to, r)         \
  40   weak_alias (from ## f ## r, to ## f ## r)     \
  41   libm_alias_float_other_r (from, to, r)
  42
  43 /* Likewise, but without the R suffix.  */
  44 #define libm_alias_float(from, to) libm_alias_float_r (from, to, )
  45
  46 #endif