1/* Decimal floating point support functions for GNU compiler.
2   Copyright (C) 2005, 2006 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 2, 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 COPYING.  If not, write to the Free
18Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
1902110-1301, USA.  */
20
21#ifndef GCC_DFP_H
22#define GCC_DFP_H
23
24/* Encode REAL_VALUE_TYPEs into 32/64/128-bit IEEE 754R encoded values.  */
25void encode_decimal32  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
26void encode_decimal64  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
27void decode_decimal128 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
28
29/* Decode 32/64/128-bit IEEE 754R encoded values into REAL_VALUE_TYPEs.  */
30void decode_decimal32  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
31void decode_decimal64  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
32void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
33
34/* Arithmetic and conversion functions.  */
35int  decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
36void decimal_real_from_string (REAL_VALUE_TYPE *, const char *);
37void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
38void decimal_real_convert (REAL_VALUE_TYPE *, enum machine_mode, 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 *);
41bool decimal_real_arithmetic (REAL_VALUE_TYPE *, enum tree_code, const REAL_VALUE_TYPE *,
42			      const REAL_VALUE_TYPE *);
43void decimal_real_maxval (REAL_VALUE_TYPE *, int, enum machine_mode);
44void decimal_real_to_integer2 (HOST_WIDE_INT *, HOST_WIDE_INT *, const REAL_VALUE_TYPE *);
45HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *);
46
47#endif /* GCC_DFP_H */
48