/* 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 (struct type *type); extern DOUBLEST extract_typed_floating (const void *addr, struct type *type); extern void store_typed_floating (void *addr, struct type *type, DOUBLEST val); extern void convert_typed_floating (const void *from, struct type *from_type, void *to, 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