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da3331ec16
* gdbarch.sh: Add missing opaque declarations. * gdbarch.h: Regnerate. * symtab.h: Add missing opaque declarations. * value.h, target.h, symfile.h, stabsread.h: Ditto. * x86-64-tdep.h, xmodem.h, monitor.h, typeprint.h: Ditto. * srec.h, solib-svr4.h, source.h, inferior.h: Ditto. * ser-unix.h, serial.h, remote-utils.h, gdbcore.h: Ditto. * ppc-tdep.h, ocd.h, mips-tdep.h, gdbtypes.h: Ditto. * buildsym.h, builtin-regs.h, linespec.h, language.h: Ditto. * i387-tdep.h, gdbthread.h, event-top.h, gdb.h: Ditto. * dwarf2cfi.h, doublest.h, disasm.h, cp-abi.h: Ditto. * cli-out.h, c-lang.h, ax-gdb.h, arch-utils.h: Ditto. * ada-lang.h, config/nm-lynx.h, config/nm-linux.h: Ditto. * config/sparc/tm-sp64.h, config/rs6000/tm-rs6000.h: Ditto. * config/pa/tm-hppah.h, config/m68k/tm-delta68.h: Ditto. * cli/cli-setshow.h, cli/cli-script.h: Ditto.
91 lines
3.6 KiB
C
91 lines
3.6 KiB
C
/* Floating point definitions for GDB.
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Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
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1996, 1997, 1998, 1999, 2000, 2001, 2003 Free Software Foundation,
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Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef DOUBLEST_H
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#define DOUBLEST_H
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struct type;
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/* Setup definitions for host and target floating point formats. We need to
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consider the format for `float', `double', and `long double' for both target
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and host. We need to do this so that we know what kind of conversions need
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to be done when converting target numbers to and from the hosts DOUBLEST
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data type. */
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/* This is used to indicate that we don't know the format of the floating point
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number. Typically, this is useful for native ports, where the actual format
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is irrelevant, since no conversions will be taking place. */
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#include "floatformat.h" /* For struct floatformat */
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/* Use `long double' if the host compiler supports it. (Note that this is not
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necessarily any longer than `double'. On SunOS/gcc, it's the same as
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double.) This is necessary because GDB internally converts all floating
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point values to the widest type supported by the host.
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There are problems however, when the target `long double' is longer than the
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host's `long double'. In general, we'll probably reduce the precision of
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any such values and print a warning. */
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#ifdef HAVE_LONG_DOUBLE
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typedef long double DOUBLEST;
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#else
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typedef double DOUBLEST;
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#endif
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extern void floatformat_to_doublest (const struct floatformat *,
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const void *in, DOUBLEST *out);
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extern void floatformat_from_doublest (const struct floatformat *,
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const DOUBLEST *in, void *out);
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extern int floatformat_is_negative (const struct floatformat *, char *);
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extern int floatformat_is_nan (const struct floatformat *, char *);
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extern char *floatformat_mantissa (const struct floatformat *, char *);
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/* These functions have been replaced by extract_typed_floating and
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store_typed_floating.
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Most calls are passing in TYPE_LENGTH (TYPE) so can be changed to
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just pass the TYPE. The remainder pass in the length of a
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register, those calls should instead pass in the floating point
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type that corresponds to that length. */
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extern DOUBLEST deprecated_extract_floating (const void *addr, int len);
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extern void deprecated_store_floating (void *addr, int len, DOUBLEST val);
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/* Given TYPE, return its floatformat. TYPE_FLOATFORMAT() may return
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NULL. type_floatformat() detects that and returns a floatformat
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based on the type size when FLOATFORMAT is NULL. */
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const struct floatformat *floatformat_from_type (const struct type *type);
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extern DOUBLEST extract_typed_floating (const void *addr,
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const struct type *type);
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extern void store_typed_floating (void *addr, const struct type *type,
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DOUBLEST val);
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extern void convert_typed_floating (const void *from,
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const struct type *from_type,
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void *to, const struct type *to_type);
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#endif
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