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