gdb/dfp.h

   1 /* Decimal floating point support for GDB.
   2
   3    Copyright (C) 2007-2017 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* Decimal floating point is one of the extension to IEEE 754, which is
  21    described in http://grouper.ieee.org/groups/754/revision.html and
  22    http://www2.hursley.ibm.com/decimal/.  It completes binary floating
  23    point by representing floating point more exactly.  */
  24
  25 #ifndef DFP_H
  26 #define DFP_H
  27
  28 #include "doublest.h"    /* For DOUBLEST.  */
  29 #include "expression.h"  /* For enum exp_opcode.  */
  30
  31 /* When using decimal128, this is the maximum string length + 1
  32  * (value comes from libdecnumber's DECIMAL128_String constant).  */
  33 #define MAX_DECIMAL_STRING  43
  34
  35 extern void decimal_to_string (const gdb_byte *, int, enum bfd_endian, char *);
  36 extern int decimal_from_string (gdb_byte *, int, enum bfd_endian,
  37                                 const char *);
  38 extern void decimal_from_integral (struct value *from, gdb_byte *to,
  39                                    int len, enum bfd_endian byte_order);
  40 extern void decimal_from_floating (struct value *from, gdb_byte *to,
  41                                    int len, enum bfd_endian byte_order);
  42 extern DOUBLEST decimal_to_doublest (const gdb_byte *from, int len,
  43                                      enum bfd_endian byte_order);
  44 extern void decimal_binop (enum exp_opcode,
  45                            const gdb_byte *, int, enum bfd_endian,
  46                            const gdb_byte *, int, enum bfd_endian,
  47                            gdb_byte *, int, enum bfd_endian);
  48 extern int decimal_is_zero (const gdb_byte *, int, enum bfd_endian);
  49 extern int decimal_compare (const gdb_byte *, int, enum bfd_endian,
  50                             const gdb_byte *, int, enum bfd_endian);
  51 extern void decimal_convert (const gdb_byte *, int, enum bfd_endian,
  52                              gdb_byte *, int, enum bfd_endian);
  53
  54 #endif