1  /* Define aliases for libm double 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_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