/* Floating point definitions for GDB.
- Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 1998, 1999, 2000, 2001
+
+ Copyright (C) 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2003, 2005, 2006, 2007
Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, 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
#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
host's `long double'. In general, we'll probably reduce the precision of
any such values and print a warning. */
-#ifdef HAVE_LONG_DOUBLE
+#if (defined HAVE_LONG_DOUBLE && defined PRINTF_HAS_LONG_DOUBLE \
+ && defined SCANF_HAS_LONG_DOUBLE)
typedef long double DOUBLEST;
+# define DOUBLEST_PRINT_FORMAT "%Lg"
+# define DOUBLEST_SCAN_FORMAT "%Lg"
#else
typedef double DOUBLEST;
+# define DOUBLEST_PRINT_FORMAT "%g"
+# define DOUBLEST_SCAN_FORMAT "%lg"
+/* If we can't scan or print long double, we don't want to use it
+ anywhere. */
+# undef HAVE_LONG_DOUBLE
+# undef PRINTF_HAS_LONG_DOUBLE
+# undef SCANF_HAS_LONG_DOUBLE
#endif
+/* Different kinds of floatformat numbers recognized by
+ floatformat_classify. To avoid portability issues, we use local
+ values instead of the C99 macros (FP_NAN et cetera). */
+enum float_kind {
+ float_nan,
+ float_infinite,
+ float_zero,
+ float_normal,
+ float_subnormal
+};
+
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 *);
-
-extern DOUBLEST extract_floating (const void *in, int);
-extern void store_floating (void *, int, DOUBLEST);
+extern int floatformat_is_negative (const struct floatformat *,
+ const bfd_byte *);
+extern enum float_kind floatformat_classify (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);
#endif