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