Home | History | Annotate | Line # | Download | only in gcc 
      1 /* Decimal floating point support functions for GNU compiler.
      2    Copyright (C) 2005-2022 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 3, 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 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.  */
     24 void encode_decimal32  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
     25 void encode_decimal64  (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
     26 void 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.  */
     29 void decode_decimal32  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
     30 void decode_decimal64  (const struct real_format *, REAL_VALUE_TYPE *, const long *);
     31 void encode_decimal128 (const struct real_format *fmt, long *, const REAL_VALUE_TYPE *);
     32 
     33 /* Arithmetic and conversion functions.  */
     34 int  decimal_do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
     35 void decimal_real_from_string (REAL_VALUE_TYPE *, const char *);
     36 void decimal_round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
     37 void decimal_real_convert (REAL_VALUE_TYPE *, const real_format *,
     38 			   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 void decimal_real_maxval (REAL_VALUE_TYPE *, int, machine_mode);
     42 wide_int decimal_real_to_integer (const REAL_VALUE_TYPE *, bool *, int);
     43 HOST_WIDE_INT decimal_real_to_integer (const REAL_VALUE_TYPE *);
     44 
     45 #ifdef TREE_CODE
     46 bool 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