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1 /* Decimal floating point support functions for GNU compiler.
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145
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2 Copyright (C) 2005-2020 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_DFP_H
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21 #define GCC_DFP_H
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22
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23 /* Encode REAL_VALUE_TYPEs into 32/64/128-bit IEEE 754 encoded values. */
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24 void encode_decimal32 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
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25 void encode_decimal64 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
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26 void decode_decimal128 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
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27
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28 /* Decode 32/64/128-bit IEEE 754 encoded values into REAL_VALUE_TYPEs. */
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29 void decode_decimal32 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
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30 void decode_decimal64 (const struct real_format *, REAL_VALUE_TYPE *, const long *);
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31 void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
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32
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33 /* Arithmetic and conversion functions. */
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34 int decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
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35 void decimal_real_from_string (REAL_VALUE_TYPE *, const char *);
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36 void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
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111
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37 void decimal_real_convert (REAL_VALUE_TYPE *, const real_format *,
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38 const REAL_VALUE_TYPE *);
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39 void decimal_real_to_decimal (char *, const REAL_VALUE_TYPE *, size_t, size_t, int);
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40 void decimal_do_fix_trunc (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
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111
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41 void decimal_real_maxval (REAL_VALUE_TYPE *, int, machine_mode);
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42 wide_int decimal_real_to_integer (const REAL_VALUE_TYPE *, bool *, int);
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43 HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *);
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44
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45 #ifdef TREE_CODE
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46 bool decimal_real_arithmetic (REAL_VALUE_TYPE *, enum tree_code, const REAL_VALUE_TYPE *,
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47 const REAL_VALUE_TYPE *);
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48 #endif
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49
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50 #endif /* GCC_DFP_H */
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