From: martynas <martynas@openbsd.org>
Date: Mon, 21 Jul 2008 21:50:06 +0000 (+0000)
Subject: vaxfp.h is VAX pendant of ieee.h.  it defines VAX f fp, and VAX d
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=c0470295f9194252e165e5628e05efe81e5b670a;p=openbsd

vaxfp.h is VAX pendant of ieee.h.  it defines VAX f fp, and VAX d
fp;  from NetBSD
ok millert@
---

diff --git a/sys/arch/vax/include/vaxfp.h b/sys/arch/vax/include/vaxfp.h
new file mode 100644
index 00000000000..39a0fb15021
--- /dev/null
+++ b/sys/arch/vax/include/vaxfp.h
@@ -0,0 +1,86 @@
+/*	$OpenBSD: vaxfp.h,v 1.1 2008/07/21 21:50:06 martynas Exp $	*/
+/*	$NetBSD: vaxfp.h,v 1.7 2008/04/28 20:23:39 martin Exp $	*/
+
+/*-
+ * Copyright (c) 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Klaus Klein.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * vaxfp.h defines the layout of VAX Floating-Point data types.
+ * Only F_floating and D_floating types are defined here;
+ * G_floating and H_floating are not supported by OpenBSD.
+ */
+#ifndef _VAX_VAXFP_H_
+#define	_VAX_VAXFP_H_
+
+#define	FFLT_EXPBITS	8
+#define	FFLT_FRACHBITS	7
+#define	FFLT_FRACLBITS	16
+#define	FFLT_FRACBITS	(FFLT_FRACLBITS + FFLT_FRACHBITS)
+
+struct vax_f_floating {
+	unsigned int	fflt_frach:FFLT_FRACHBITS;
+	unsigned int	fflt_exp:FFLT_EXPBITS;
+	unsigned int	fflt_sign:1;
+	unsigned int	fflt_fracl:FFLT_FRACLBITS;
+};
+
+#define	DFLT_EXPBITS	8
+#define	DFLT_FRACHBITS	7
+#define	DFLT_FRACMBITS	16
+#define	DFLT_FRACLBITS	32
+#define	DFLT_FRACBITS	(DFLT_FRACLBITS + DFLT_FRACMBITS + DFLT_FRACHBITS)
+
+struct vax_d_floating {
+	unsigned int	dflt_frach:DFLT_FRACHBITS;
+	unsigned int	dflt_exp:DFLT_EXPBITS;
+	unsigned int	dflt_sign:1;
+	unsigned int	dflt_fracm:DFLT_FRACMBITS;
+	unsigned int	dflt_fracl:DFLT_FRACLBITS;
+};
+
+/*
+ * Exponent biases.
+ */
+#define	FFLT_EXP_BIAS	128
+#define	DFLT_EXP_BIAS	128
+
+/*
+ * Convenience data structures.
+ */
+union vax_ffloating_u {
+	float			ffltu_f;
+	struct vax_f_floating	ffltu_fflt;
+};
+
+union vax_dfloating_u {
+	double			dfltu_d;
+	struct vax_d_floating	dfltu_dflt;
+};
+
+#endif /* _VAX_VAXFP_H_ */