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96 lines
2.8 KiB
96 lines
2.8 KiB
/*- |
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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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#ifndef _FPMATH_ |
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#define _FPMATH_ |
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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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#endif // _FPMATH_
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