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       1                 :             : /* Definitions of floating-point conversion from compiler
       2                 :             :    internal format to MPFR.
       3                 :             :    Copyright (C) 2010-2024 Free Software Foundation, Inc.
       4                 :             : 
       5                 :             :    This file is part of GCC.
       6                 :             : 
       7                 :             :    GCC is free software; you can redistribute it and/or modify it under
       8                 :             :    the terms of the GNU General Public License as published by the Free
       9                 :             :    Software Foundation; either version 3, or (at your option) any later
      10                 :             :    version.
      11                 :             : 
      12                 :             :    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      13                 :             :    WARRANTY; without even the implied warranty of MERCHANTABILITY or
      14                 :             :    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      15                 :             :    for more details.
      16                 :             : 
      17                 :             :    You should have received a copy of the GNU General Public License
      18                 :             :    along with GCC; see the file COPYING3.  If not see
      19                 :             :    <http://www.gnu.org/licenses/>.  */
      20                 :             : 
      21                 :             : #ifndef GCC_REALGMP_H
      22                 :             : #define GCC_REALGMP_H
      23                 :             : 
      24                 :             : #include <mpfr.h>
      25                 :             : #include <mpc.h>
      26                 :             : 
      27                 :             : class auto_mpfr
      28                 :             : {
      29                 :             : public:
      30                 :             :   auto_mpfr () { mpfr_init (m_mpfr); }
      31                 :     3834355 :   explicit auto_mpfr (mpfr_prec_t prec) { mpfr_init2 (m_mpfr, prec); }
      32                 :     3834355 :   ~auto_mpfr () { mpfr_clear (m_mpfr); }
      33                 :             : 
      34                 :     7680017 :   operator mpfr_t& () { return m_mpfr; }
      35                 :             :   mpfr_ptr operator-> () { return m_mpfr; }
      36                 :             : 
      37                 :             :   auto_mpfr (const auto_mpfr &) = delete;
      38                 :             :   auto_mpfr &operator= (const auto_mpfr &) = delete;
      39                 :             : 
      40                 :             : #if GCC_VERSION < 4008 || GCC_VERSION >= 5000
      41                 :             :   /* GCC 4.8 and 4.9 don't support this, only fixed in PR62101 for 5.0.  */
      42                 :             :   friend void mpfr_clear (auto_mpfr&) = delete;
      43                 :             :   friend void mpfr_init (auto_mpfr&) = delete;
      44                 :             :   friend void mpfr_init2 (auto_mpfr&, mpfr_prec_t) = delete;
      45                 :             : #endif
      46                 :             : 
      47                 :             : private:
      48                 :             :   mpfr_t m_mpfr;
      49                 :             : };
      50                 :             : 
      51                 :             : /* Convert between MPFR and REAL_VALUE_TYPE.  The caller is
      52                 :             :    responsible for initializing and clearing the MPFR parameter.  */
      53                 :             : 
      54                 :             : extern void real_from_mpfr (REAL_VALUE_TYPE *, mpfr_srcptr, tree, mpfr_rnd_t);
      55                 :             : extern void real_from_mpfr (REAL_VALUE_TYPE *, mpfr_srcptr,
      56                 :             :                             const real_format *, mpfr_rnd_t);
      57                 :             : extern void mpfr_from_real (mpfr_ptr, const REAL_VALUE_TYPE *, mpfr_rnd_t);
      58                 :             : 
      59                 :             : #endif /* ! GCC_REALGMP_H */