2007-05-08 Paul Gilliam <pgilliam@us.ibm.com>

[deliverable/binutils-gdb.git] / gdb / doublest.h

diff --git a/gdb/doublest.h b/gdb/doublest.h
index d98d045c987d6fd27f934ba35baf715f0730c750..983c7be0af552c0e0b48b2656f24caccbe0666c1 100644 (file)
--- a/gdb/doublest.h
+++ b/gdb/doublest.h
@@ -1,8 +1,8 @@
 /* Floating point definitions for GDB.
 
-   Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
-   1996, 1997, 1998, 1999, 2000, 2001, 2003 Free Software Foundation,
-   Inc.
+   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.
 
@@ -18,12 +18,15 @@
 
    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
@@ -45,20 +48,44 @@
    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 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.