sysdeps/ieee754/ldbl-128ibm-compat/libm-alias-float128.h

   1 /* Define aliases for libm _Float128 functions.
   2    Copyright (C) 2018-2019 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_FLOAT128_H
  20 #define _LIBM_ALIAS_FLOAT128_H
  21
  22 #include <bits/floatn.h>
  23 #include <ldbl-128ibm-compat-abi.h>
  24
  25 /* This macro should be used on all long double functions that are not part of
  26    the _Float128 API in order to provide *ieee128 symbols without exposing
  27    internal *f128 symbols.  */
  28 #define libm_alias_float128_other_r_ldbl(from, to, r) \
  29   strong_alias (from ## f128 ## r, __ ## to ## ieee128 ## r)
  30
  31 /* Define _FloatN / _FloatNx aliases (other than that for _Float128)
  32    for a _Float128 libm function that has internal name FROM ## f128
  33    ## R and public names TO ## suffix ## R for each suffix of a
  34    supported _FloatN / _FloatNx floating-point type with the same
  35    format as _Float128.  */
  36 #if __HAVE_FLOAT64X && !__HAVE_FLOAT64X_LONG_DOUBLE
  37 # define libm_alias_float128_other_r(from, to, r) \
  38   weak_alias (from ## f128 ## r, to ## f64x ## r); \
  39   libm_alias_float128_other_r_ldbl(from, to, r)
  40 #else
  41 # define libm_alias_float128_other_r(from, to, r) \
  42   libm_alias_float128_other_r_ldbl(from, to, r)
  43 #endif
  44
  45 /* Likewise, but without the R suffix.  */
  46 #define libm_alias_float128_other(from, to)     \
  47   libm_alias_float128_other_r (from, to, )
  48
  49 /* Define aliases for a _Float128 libm function that has internal name
  50    FROM ## f128 ## R and public names TO ## suffix ## R for each
  51    suffix of a supported floating-point type with the same format as
  52    _Float128.  This should only be used for functions where such
  53    public names exist for _FloatN types, not for
  54    implementation-namespace exported names (where there is one name
  55    per format, not per type) or for obsolescent functions not provided
  56    for _FloatN types.  */
  57 #define libm_alias_float128_r(from, to, r)              \
  58   weak_alias (from ## f128 ## r, to ## f128 ## r);      \
  59   libm_alias_float128_other_r (from, to, r)
  60
  61 /* Likewise, but without the R suffix.  */
  62 #define libm_alias_float128(from, to) libm_alias_float128_r (from, to, )
  63
  64 #endif