_fpmath.h revision 331722 
1/*-
2 * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
3 * Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: stable/11/lib/libc/sparc64/_fpmath.h 331722 2018-03-29 02:50:57Z eadler $
28 */
29
30union IEEEl2bits {
31	long double	e;
32	struct {
33		unsigned int	sign	:1;
34		unsigned int	exp	:15;
35		unsigned long	manh	:48;
36		unsigned long	manl	:64;
37	} bits;
38	struct {
39		unsigned int	expsign	:16;
40		unsigned long	manh	:48;
41		unsigned long	manl	:64;
42	} xbits;
43};
44
45#define	mask_nbit_l(u)	((void)0)
46#define	LDBL_IMPLICIT_NBIT
47#define	LDBL_NBIT	0
48
49#define	LDBL_MANH_SIZE	48
50#define	LDBL_MANL_SIZE	64
51
52#define	LDBL_TO_ARRAY32(u, a) do {			\
53	(a)[0] = (uint32_t)(u).bits.manl;		\
54	(a)[1] = (uint32_t)((u).bits.manl >> 32);      	\
55	(a)[2] = (uint32_t)(u).bits.manh;		\
56	(a)[3] = (uint32_t)((u).bits.manh >> 32);	\
57} while(0)
58