gcc/dfp.h

   1 /* Decimal floating point support functions for GNU compiler.
   2    Copyright (C) 2005 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 *, int, 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 */