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      57     _FloatN types, not for implementation-namespace exported names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