_fpmath.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
5 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD: stable/11/lib/libc/sparc64/_fpmath.h 330897 2018-03-14 03:19:51Z eadler $
30 */
31
32union IEEEl2bits {
33	long double	e;
34	struct {
35		unsigned int	sign	:1;
36		unsigned int	exp	:15;
37		unsigned long	manh	:48;
38		unsigned long	manl	:64;
39	} bits;
40	struct {
41		unsigned int	expsign	:16;
42		unsigned long	manh	:48;
43		unsigned long	manl	:64;
44	} xbits;
45};
46
47#define	mask_nbit_l(u)	((void)0)
48#define	LDBL_IMPLICIT_NBIT
49#define	LDBL_NBIT	0
50
51#define	LDBL_MANH_SIZE	48
52#define	LDBL_MANL_SIZE	64
53
54#define	LDBL_TO_ARRAY32(u, a) do {			\
55	(a)[0] = (uint32_t)(u).bits.manl;		\
56	(a)[1] = (uint32_t)((u).bits.manl >> 32);      	\
57	(a)[2] = (uint32_t)(u).bits.manh;		\
58	(a)[3] = (uint32_t)((u).bits.manh >> 32);	\
59} while(0)
60