dfp.h revision 256281
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