Differential D2132 Diff 4679 lib/libc/aarch64/_fpmath.h

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lib/libc/aarch64/_fpmath.h

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				/*-
				* Copyright (c) 2002, 2003 David Schultz <das@FreeBSD.ORG>
				impUnsubmitted Not Done Inline Actions Another instance of where we need a generic IEEE thing, rather than copies of the IEEE thing... imp: Another instance of where we need a generic IEEE thing, rather than copies of the IEEE thing...
				* Copyright (2) 2014 The FreeBSD Foundation
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*
				* $FreeBSD$
				*/

				union IEEEl2bits {
				long double e;
				struct {
				unsigned long manl :64;
				unsigned long manh :48;
				unsigned int exp :15;
				unsigned int sign :1;
				} bits;
				/* TODO andrew: Check the packing here */
				struct {
				unsigned long manl :64;
				unsigned long manh :48;
				unsigned int expsign :16;
				} xbits;
				};

				#define LDBL_NBIT 0
				#define LDBL_IMPLICIT_NBIT
				#define mask_nbit_l(u) ((void)0)

				#define LDBL_MANH_SIZE 48
				#define LDBL_MANL_SIZE 64

				#define LDBL_TO_ARRAY32(u, a) do { \
				(a)[0] = (uint32_t)(u).bits.manl; \
				(a)[1] = (uint32_t)((u).bits.manl >> 32); \
				(a)[2] = (uint32_t)(u).bits.manh; \
				(a)[3] = (uint32_t)((u).bits.manh >> 32); \
				} while(0)