sysdeps/ieee754/ldbl-opt/libm-alias-ldouble.h

   1 /* Define aliases for libm long double functions.  ldbl-opt version.
   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_LDOUBLE_H
  20 #define _LIBM_ALIAS_LDOUBLE_H
  21
  22 #include <bits/floatn.h>
  23 #include <math_ldbl_opt.h>
  24 #include <ldbl-compat-choose.h>
  25
  26 #if __HAVE_FLOAT128 && !__HAVE_DISTINCT_FLOAT128
  27 # define libm_alias_ldouble_other_r_f128(from, to, r)   \
  28   weak_alias (from ## l ## r, to ## f128 ## r)
  29 #else
  30 # define libm_alias_ldouble_other_r_f128(from, to, r)
  31 #endif
  32
  33 #if __HAVE_FLOAT64X_LONG_DOUBLE
  34 # define libm_alias_ldouble_other_r_f64x(from, to, r)   \
  35   weak_alias (from ## l ## r, to ## f64x ## r)
  36 #else
  37 # define libm_alias_ldouble_other_r_f64x(from, to, r)
  38 #endif
  39
  40 /* Define _FloatN / _FloatNx aliases for a long double libm function
  41    that has internal name FROM ## l ## R and public names TO ## suffix
  42    ## R for each suffix of a supported _FloatN / _FloatNx
  43    floating-point type with the same format as long double.  */
  44 #define libm_alias_ldouble_other_r(from, to, r)         \
  45   libm_alias_ldouble_other_r_f128 (from, to, r);        \
  46   libm_alias_ldouble_other_r_f64x (from, to, r)
  47
  48 /* Likewise, but without the R suffix.  */
  49 #define libm_alias_ldouble_other(from, to)      \
  50   libm_alias_ldouble_other_r (from, to, )
  51
  52 /* Define aliases for a long double libm function that has internal
  53    name FROM ## l ## R and public names TO ## suffix ## R for each
  54    suffix of a supported floating-point type with the same format as
  55    long double.  This should only be used for functions where such
  56    public names exist for _FloatN types, not for
  57    implementation-namespace exported names (where there is one name
  58    per format, not per type) or for obsolescent functions not provided
  59    for _FloatN types.  */
  60 #define libm_alias_ldouble_r(from, to, r)                       \
  61   LONG_DOUBLE_COMPAT_CHOOSE_libm_ ## to ## l ## r               \
  62     (long_double_symbol (libm, from ## l ## r, to ## l ## r),   \
  63      weak_alias (from ## l ## r, to ## l ## r));                \
  64   libm_alias_ldouble_other_r (from, to, r)
  65
  66 /* Likewise, but without the R suffix.  */
  67 #define libm_alias_ldouble(from, to) libm_alias_ldouble_r (from, to, )
  68
  69 #endif