gcc/dfp.h

   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 */