1 /* Decimal floating point support functions for GNU compiler. 2 Copyright (C) 2005, 2006 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 2, 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 COPYING. If not, write to the Free 18 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301, 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. */ 25 void encode_decimal32 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *); 26 void encode_decimal64 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *); 27 void 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. */ 30 void decode_decimal32 (const struct real_format *, REAL_VALUE_TYPE *, const long *); 31 void decode_decimal64 (const struct real_format *, REAL_VALUE_TYPE *, const long *); 32 void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *); 33 34 /* Arithmetic and conversion functions. */ 35 int decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int); 36 void decimal_real_from_string (REAL_VALUE_TYPE *, const char *); 37 void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *); 38 void decimal_real_convert (REAL_VALUE_TYPE *, enum machine_mode, 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 bool decimal_real_arithmetic (REAL_VALUE_TYPE *, enum tree_code, const REAL_VALUE_TYPE *, 42 const REAL_VALUE_TYPE *); 43 void decimal_real_maxval (REAL_VALUE_TYPE *, int, enum machine_mode); 44 void decimal_real_to_integer2 (HOST_WIDE_INT *, HOST_WIDE_INT *, const REAL_VALUE_TYPE *); 45 HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *); 46 47 #endif /* GCC_DFP_H */ 48