1/* Decimal floating point support functions for GNU compiler.
2 Copyright (C) 2005-2017 Free Software Foundation, Inc.
3
4This file is part of GCC.
5
6GCC is free software; you can redistribute it and/or modify it under
7the terms of the GNU General Public License as published by the Free
8Software Foundation; either version 3, or (at your option) any later
9version.
10
11GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12WARRANTY; without even the implied warranty of MERCHANTABILITY or
13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14for more details.
15
16You should have received a copy of the GNU General Public License
17along 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. */
24void encode_decimal32 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
25void encode_decimal64 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
26void 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. */
29void decode_decimal32 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
30void decode_decimal64 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
31void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
32
33/* Arithmetic and conversion functions. */
34int decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
35void decimal_real_from_string (REAL_VALUE_TYPE *, const char *);
36void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
37void decimal_real_convert (REAL_VALUE_TYPE *, const real_format *,
38 const REAL_VALUE_TYPE *);
39void decimal_real_to_decimal (char *, const REAL_VALUE_TYPE *, size_t, size_t, int);
40void decimal_do_fix_trunc (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
41void decimal_real_maxval (REAL_VALUE_TYPE *, int, machine_mode);
42wide_int decimal_real_to_integer (const REAL_VALUE_TYPE *, bool *, int);
43HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *);
44
45#ifdef TREE_CODE
46bool 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 */
51