sysdeps/generic/libm-alias-double.h

   1 /* Define aliases for libm double functions.
   2    Copyright (C) 2017-2021 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _LIBM_ALIAS_DOUBLE_H
  20 #define _LIBM_ALIAS_DOUBLE_H
  21
  22 #include <bits/floatn.h>
  23
  24 #if __HAVE_FLOAT64 && !__HAVE_DISTINCT_FLOAT64
  25 # define libm_alias_double_other_r_f64(from, to, r)     \
  26   weak_alias (from ## r, to ## f64 ## r)
  27 #else
  28 # define libm_alias_double_other_r_f64(from, to, r)
  29 #endif
  30
  31 #if __HAVE_FLOAT32X && !__HAVE_DISTINCT_FLOAT32X
  32 # define libm_alias_double_other_r_f32x(from, to, r)    \
  33   weak_alias (from ## r, to ## f32x ## r)
  34 #else
  35 # define libm_alias_double_other_r_f32x(from, to, r)
  36 #endif
  37
  38 /* Define _FloatN / _FloatNx aliases for a double libm function that
  39    has internal name FROM ## R and public names TO ## suffix ## R for
  40    each suffix of a supported _FloatN / _FloatNx floating-point type
  41    with the same format as double.  */
  42 #define libm_alias_double_other_r(from, to, r)  \
  43   libm_alias_double_other_r_f64 (from, to, r);  \
  44   libm_alias_double_other_r_f32x (from, to, r)
  45
  46 /* Likewise, but without the R suffix.  */
  47 #define libm_alias_double_other(from, to)       \
  48   libm_alias_double_other_r (from, to, )
  49
  50 /* Define aliases for a double libm function that has internal name
  51    FROM ## R and public names TO ## suffix ## R for each suffix of a
  52    supported floating-point type with the same format as double.  This
  53    should only be used for functions where such public names exist for
  54    _FloatN types, not for implementation-namespace exported names
  55    (where there is one name per format, not per type) or for
  56    obsolescent functions not provided for _FloatN types.  */
  57 #ifdef NO_LONG_DOUBLE
  58 # define libm_alias_double_r(from, to, r)       \
  59   weak_alias (from ## r, to ## r)               \
  60   strong_alias (from ## r, from ## l ## r)      \
  61   weak_alias (from ## r, to ## l ## r);         \
  62   libm_alias_double_other_r (from, to, r)
  63 #else
  64 # define libm_alias_double_r(from, to, r)       \
  65   weak_alias (from ## r, to ## r);              \
  66   libm_alias_double_other_r (from, to, r)
  67 #endif
  68
  69 /* Likewise, but without the R suffix.  */
  70 #define libm_alias_double(from, to) libm_alias_double_r (from, to, )
  71
  72 #endif