94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
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/*-
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* Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org>
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* Copyright (c) 2002 David Schultz <das@FreeBSD.ORG>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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// ANDROID changed:
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// - keep only little endian variants as they're the only one supported.
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// - add long double structures here instead of _fpmath.h.
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// - android uses 128 bits long doubles for LP64, so the structure and macros
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// were reworked for the quad precision ieee representation.
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#pragma once
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#include <endian.h>
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union IEEEf2bits {
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float f;
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struct {
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unsigned int man :23;
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unsigned int exp :8;
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unsigned int sign :1;
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} bits;
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};
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#define DBL_MANH_SIZE 20
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#define DBL_MANL_SIZE 32
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union IEEEd2bits {
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double d;
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struct {
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unsigned int manl :32;
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unsigned int manh :20;
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unsigned int exp :11;
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unsigned int sign :1;
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} bits;
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};
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#ifdef __LP64__
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union IEEEl2bits {
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long double e;
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struct {
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unsigned long manl :64;
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unsigned long manh :48;
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unsigned int exp :15;
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unsigned int sign :1;
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} bits;
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struct {
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unsigned long manl :64;
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unsigned long manh :48;
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unsigned int expsign :16;
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} xbits;
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};
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#define LDBL_NBIT 0
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#define LDBL_IMPLICIT_NBIT
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#define mask_nbit_l(u) ((void)0)
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#define LDBL_MANH_SIZE 48
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#define LDBL_MANL_SIZE 64
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#define LDBL_TO_ARRAY32(u, a) do { \
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(a)[0] = (uint32_t)(u).bits.manl; \
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(a)[1] = (uint32_t)((u).bits.manl >> 32); \
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(a)[2] = (uint32_t)(u).bits.manh; \
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(a)[3] = (uint32_t)((u).bits.manh >> 32); \
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} while(0)
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#endif // __LP64__
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