From d7e1be4659dd730664b8948e99a3e8dff707b660 Mon Sep 17 00:00:00 2001
From: Per Bothner <per@bothner.com>
Date: Thu, 18 Mar 1993 22:00:09 +0000
Subject: 	* ieee-float.h:  Moved from ../gdb. 	* dis-asm.h:  New
 file.  Interface to dis-assembler.

---
 include/ieee-float.h | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 include/ieee-float.h

(limited to 'include/ieee-float.h')

diff --git a/include/ieee-float.h b/include/ieee-float.h
new file mode 100644
index 0000000..68ef23b
--- /dev/null
+++ b/include/ieee-float.h
@@ -0,0 +1,65 @@
+/* IEEE floating point support declarations, for GDB, the GNU Debugger.
+   Copyright (C) 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#if !defined (IEEE_FLOAT_H)
+#define IEEE_FLOAT_H 1
+
+#include "ansidecl.h"
+
+/* 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 PARAMS ((const struct ext_format *, char *, double *));
+
+/* The converse: convert the double *FROM to an extended float
+   and store where TO points.  */
+
+extern void
+double_to_ieee_extended PARAMS ((const struct ext_format *, double *, char *));
+
+#endif	/* defined (IEEE_FLOAT_H) */
-- 
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