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+/* IEEE floating point support declarations, for GDB, the GNU Debugger.
+ Copyright (C) 1991 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Parameters for extended float format: */
+
+struct ext_format {
+ unsigned totalsize; /* Total size of extended number */
+ unsigned signbyte; /* Byte number of sign bit */
+ unsigned char signmask; /* Mask for sign bit */
+ unsigned expbyte_h; /* High byte of exponent */
+ unsigned expbyte_l; /* Low byte of exponent */
+ unsigned manbyte_h; /* High byte of mantissa */
+ unsigned manbyte_l; /* Low byte of mantissa */
+};
+
+#define TOTALSIZE ext_format->totalsize
+#define SIGNBYTE ext_format->signbyte
+#define SIGNMASK ext_format->signmask
+#define EXPBYTE_H ext_format->expbyte_h
+#define EXPBYTE_L ext_format->expbyte_l
+#define MANBYTE_H ext_format->manbyte_h
+#define MANBYTE_L ext_format->manbyte_l
+
+/* Actual ext_format structs for various machines are in the *-tdep.c file
+ for each machine. */
+
+#define EXT_EXP_NAN 0x7FFF /* Exponent value that indicates NaN */
+#define EXT_EXP_BIAS 0x3FFF /* Amount added to "true" exponent for ext */
+#define DBL_EXP_BIAS 0x3FF /* Ditto, for doubles */
+
+/* Convert an IEEE extended float to a double.
+ FROM is the address of the extended float.
+ Store the double in *TO. */
+
+extern void
+ieee_extended_to_double (
+#ifdef __STDC__
+ struct ext_format *ext_format, char *from, double *to
+#endif
+);
+
+/* The converse: convert the double *FROM to an extended float
+ and store where TO points. */
+
+void
+double_to_ieee_extended (
+#ifdef __STDC__
+ struct ext_format *ext_format, double *from, char *to
+#endif
+);