mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-24 10:35:12 +08:00
80 lines
3.2 KiB
C
80 lines
3.2 KiB
C
/* Floating point definitions for GDB.
|
|
Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
|
|
1997, 1998, 1999, 2000, 2001
|
|
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
|
|
|
|
/* 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 */
|
|
|
|
extern const struct floatformat floatformat_unknown;
|
|
|
|
/* 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 *, char *);
|
|
extern int floatformat_is_nan (const struct floatformat *, char *);
|
|
extern char *floatformat_mantissa (const struct floatformat *, char *);
|
|
|
|
/* These two functions are deprecated in favour of
|
|
extract_typed_floating and store_typed_floating. See comments in
|
|
'doublest.c' for details. */
|
|
|
|
extern DOUBLEST extract_floating (const void *addr, int len);
|
|
extern void store_floating (void *addr, int len, DOUBLEST val);
|
|
|
|
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);
|
|
|
|
#endif
|