1  /* Decimal floating point support functions for GNU compiler.
       2     Copyright (C) 2005-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef GCC_DFP_H
      21  #define GCC_DFP_H
      22  
      23  /* Encode REAL_VALUE_TYPEs into 32/64/128-bit IEEE 754 encoded values.  */
      24  void encode_decimal32  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
      25  void encode_decimal64  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
      26  void decode_decimal128 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
      27  
      28  /* Decode 32/64/128-bit IEEE 754 encoded values into REAL_VALUE_TYPEs.  */
      29  void decode_decimal32  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
      30  void decode_decimal64  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
      31  void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
      32  
      33  /* Arithmetic and conversion functions.  */
      34  int  decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
      35  void decimal_real_from_string (REAL_VALUE_TYPE *, const char *);
      36  void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
      37  void decimal_real_convert (REAL_VALUE_TYPE *, const real_format *,
      38  			   const REAL_VALUE_TYPE *);
      39  void decimal_real_to_decimal (char *, const REAL_VALUE_TYPE *, size_t, size_t, int);
      40  void decimal_do_fix_trunc (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
      41  void decimal_real_maxval (REAL_VALUE_TYPE *, int, machine_mode);
      42  wide_int decimal_real_to_integer (const REAL_VALUE_TYPE *, bool *, int);
      43  HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *);
      44  
      45  #ifdef TREE_CODE
      46  bool decimal_real_arithmetic (REAL_VALUE_TYPE *, enum tree_code, const REAL_VALUE_TYPE *,
      47  			      const REAL_VALUE_TYPE *);
      48  #endif
      49  
      50  #endif /* GCC_DFP_H */