72 lines
2.9 KiB
C
72 lines
2.9 KiB
C
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)quad.h 8.1 (Berkeley) 6/4/93
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* $FreeBSD$
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*/
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/* Derived from FreeBDS libkern quad.h, munged by Erbo to COMROGUE standards */
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#ifndef QUAD_H_INCLUDED
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#define QUAD_H_INCLUDED
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#include <comrogue/types.h>
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typedef union tagUU {
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INT64 q; /* signed quad */
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UINT64 uq; /* unsigned quad */
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INT32 sl[2]; /* two signed longs */
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UINT32 ul[2]; /* two unsigned longs */
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} UU;
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/* Low word/high word definitions. */
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#define L 0
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#define H 1
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/* Number of bits in a halfword. */
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#define HALF_BITS (INT32_BITS / 2)
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/*
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* Extract high and low shortwords from longword, and move low shortword of
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* longword to upper half of long, i.e., produce the upper longword of
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* ((quad_t)(x) << (number_of_bits_in_long/2)). (`x' must actually be u_long.)
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*
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* These are used in the multiply code, to split a longword into upper
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* and lower halves, and to reassemble a product as a quad_t, shifted left
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* (sizeof(long)*CHAR_BIT/2).
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*/
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#define HHALF(x) ((x) >> HALF_BITS)
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#define LHALF(x) ((x) & ((1 << HALF_BITS) - 1))
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#define LHUP(x) ((x) << HALF_BITS)
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extern UINT64 __qdivrem(UINT64 u, UINT64 v, PUINT64 pRem);
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#endif /* QUAD_H_INCLUDED */
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