1  /* Define aliases for libm float functions.
       2     Copyright (C) 2017-2023 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_FLOAT_H
      20  #define _LIBM_ALIAS_FLOAT_H
      21  
      22  #include <bits/floatn.h>
      23  
      24  /* Define _FloatN / _FloatNx aliases for a float libm function that
      25     has internal name FROM ## f ## R and public names TO ## suffix ## R
      26     for each suffix of a supported _FloatN / _FloatNx floating-point
      27     type with the same format as float.  */
      28  #if __HAVE_FLOAT32 && !__HAVE_DISTINCT_FLOAT32
      29  # define libm_alias_float_other_r(from, to, r)	\
      30    weak_alias (from ## f ## r, to ## f32 ## r)
      31  #else
      32  # define libm_alias_float_other_r(from, to, r)
      33  #endif
      34  
      35  /* Likewise, but without the R suffix.  */
      36  #define libm_alias_float_other(from, to)	\
      37    libm_alias_float_other_r (from, to, )
      38  
      39  /* Define aliases for a float libm function that has internal name
      40     FROM ## f ## R and public names TO ## suffix ## R for each suffix
      41     of a supported floating-point type with the same format as float.
      42     This should only be used for functions where such public names
      43     exist for _FloatN types, not for implementation-namespace exported
      44     names (where there is one name per format, not per type) or for
      45     obsolescent functions not provided for _FloatN types.  */
      46  #define libm_alias_float_r(from, to, r)		\
      47    weak_alias (from ## f ## r, to ## f ## r);	\
      48    libm_alias_float_other_r (from, to, r)
      49  
      50  /* Likewise, but without the R suffix.  */
      51  #define libm_alias_float(from, to) libm_alias_float_r (from, to, )
      52  
      53  #endif