| /* Floating point definitions for GDB. |
| |
| Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005 Free Software |
| Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #ifndef DOUBLEST_H |
| #define DOUBLEST_H |
| |
| struct type; |
| struct floatformat; |
| |
| /* Setup definitions for host and target floating point formats. We need to |
| consider the format for `float', `double', and `long double' for both target |
| and host. We need to do this so that we know what kind of conversions need |
| to be done when converting target numbers to and from the hosts DOUBLEST |
| data type. */ |
| |
| /* This is used to indicate that we don't know the format of the floating point |
| number. Typically, this is useful for native ports, where the actual format |
| is irrelevant, since no conversions will be taking place. */ |
| |
| #include "floatformat.h" /* For struct floatformat */ |
| |
| /* Use `long double' if the host compiler supports it. (Note that this is not |
| necessarily any longer than `double'. On SunOS/gcc, it's the same as |
| double.) This is necessary because GDB internally converts all floating |
| point values to the widest type supported by the host. |
| |
| There are problems however, when the target `long double' is longer than the |
| host's `long double'. In general, we'll probably reduce the precision of |
| any such values and print a warning. */ |
| |
| #ifdef HAVE_LONG_DOUBLE |
| typedef long double DOUBLEST; |
| #else |
| typedef double DOUBLEST; |
| #endif |
| |
| extern void floatformat_to_doublest (const struct floatformat *, |
| const void *in, DOUBLEST *out); |
| extern void floatformat_from_doublest (const struct floatformat *, |
| const DOUBLEST *in, void *out); |
| |
| extern int floatformat_is_negative (const struct floatformat *, |
| const bfd_byte *); |
| extern int floatformat_is_nan (const struct floatformat *, const bfd_byte *); |
| extern const char *floatformat_mantissa (const struct floatformat *, |
| const bfd_byte *); |
| |
| /* These functions have been replaced by extract_typed_floating and |
| store_typed_floating. |
| |
| Most calls are passing in TYPE_LENGTH (TYPE) so can be changed to |
| just pass the TYPE. The remainder pass in the length of a |
| register, those calls should instead pass in the floating point |
| type that corresponds to that length. */ |
| |
| extern DOUBLEST deprecated_extract_floating (const void *addr, int len); |
| extern void deprecated_store_floating (void *addr, int len, DOUBLEST val); |
| |
| /* Given TYPE, return its floatformat. TYPE_FLOATFORMAT() may return |
| NULL. type_floatformat() detects that and returns a floatformat |
| based on the type size when FLOATFORMAT is NULL. */ |
| |
| const struct floatformat *floatformat_from_type (const struct type *type); |
| |
| extern DOUBLEST extract_typed_floating (const void *addr, |
| const struct type *type); |
| extern void store_typed_floating (void *addr, const struct type *type, |
| DOUBLEST val); |
| extern void convert_typed_floating (const void *from, |
| const struct type *from_type, |
| void *to, const struct type *to_type); |
| |
| /* Table of convenient float-formats. */ |
| extern const struct floatformat *floatformat_ieee_single[BFD_ENDIAN_UNKNOWN]; |
| extern const struct floatformat *floatformat_ieee_double[BFD_ENDIAN_UNKNOWN]; |
| extern const struct floatformat *floatformat_ieee_quad[BFD_ENDIAN_UNKNOWN]; |
| extern const struct floatformat *floatformat_arm_ext[BFD_ENDIAN_UNKNOWN]; |
| extern const struct floatformat *floatformat_ia64_spill[BFD_ENDIAN_UNKNOWN]; |
| |
| #endif |