1*479ab7f0SSascha Wildner /*- 2*479ab7f0SSascha Wildner * Copyright (c) 1992, 1993 3*479ab7f0SSascha Wildner * The Regents of the University of California. All rights reserved. 4*479ab7f0SSascha Wildner * 5*479ab7f0SSascha Wildner * This software was developed by the Computer Systems Engineering group 6*479ab7f0SSascha Wildner * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7*479ab7f0SSascha Wildner * contributed to Berkeley. 8*479ab7f0SSascha Wildner * 9*479ab7f0SSascha Wildner * Redistribution and use in source and binary forms, with or without 10*479ab7f0SSascha Wildner * modification, are permitted provided that the following conditions 11*479ab7f0SSascha Wildner * are met: 12*479ab7f0SSascha Wildner * 1. Redistributions of source code must retain the above copyright 13*479ab7f0SSascha Wildner * notice, this list of conditions and the following disclaimer. 14*479ab7f0SSascha Wildner * 2. Redistributions in binary form must reproduce the above copyright 15*479ab7f0SSascha Wildner * notice, this list of conditions and the following disclaimer in the 16*479ab7f0SSascha Wildner * documentation and/or other materials provided with the distribution. 17*479ab7f0SSascha Wildner * 3. Neither the name of the University nor the names of its contributors 18*479ab7f0SSascha Wildner * may be used to endorse or promote products derived from this software 19*479ab7f0SSascha Wildner * without specific prior written permission. 20*479ab7f0SSascha Wildner * 21*479ab7f0SSascha Wildner * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22*479ab7f0SSascha Wildner * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23*479ab7f0SSascha Wildner * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24*479ab7f0SSascha Wildner * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25*479ab7f0SSascha Wildner * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26*479ab7f0SSascha Wildner * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27*479ab7f0SSascha Wildner * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28*479ab7f0SSascha Wildner * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29*479ab7f0SSascha Wildner * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30*479ab7f0SSascha Wildner * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31*479ab7f0SSascha Wildner * SUCH DAMAGE. 32*479ab7f0SSascha Wildner * 33*479ab7f0SSascha Wildner * @(#)quad.h 8.1 (Berkeley) 6/4/93 34*479ab7f0SSascha Wildner * $FreeBSD: src/lib/libstand/quad.h,v 1.2 1999/08/28 00:05:33 peter Exp $ 35*479ab7f0SSascha Wildner */ 36*479ab7f0SSascha Wildner 37*479ab7f0SSascha Wildner #ifndef _STAND_QUAD_H_ 38*479ab7f0SSascha Wildner #define _STAND_QUAD_H_ 39*479ab7f0SSascha Wildner 40*479ab7f0SSascha Wildner #include <sys/cdefs.h> 41*479ab7f0SSascha Wildner #include <sys/types.h> 42*479ab7f0SSascha Wildner #include <limits.h> 43*479ab7f0SSascha Wildner 44*479ab7f0SSascha Wildner _Static_assert(sizeof(quad_t) == sizeof(int) * 2, 45*479ab7f0SSascha Wildner "Bitwise function in libstand are broken on this architecture"); 46*479ab7f0SSascha Wildner 47*479ab7f0SSascha Wildner /* 48*479ab7f0SSascha Wildner * Depending on the desired operation, we view a `long long' (aka quad_t) in 49*479ab7f0SSascha Wildner * one or more of the following formats. 50*479ab7f0SSascha Wildner */ 51*479ab7f0SSascha Wildner union uu { 52*479ab7f0SSascha Wildner quad_t q; /* as a (signed) quad */ 53*479ab7f0SSascha Wildner quad_t uq; /* as an unsigned quad */ 54*479ab7f0SSascha Wildner int sl[2]; /* as two signed ints */ 55*479ab7f0SSascha Wildner u_int ul[2]; /* as two unsigned ints */ 56*479ab7f0SSascha Wildner }; 57*479ab7f0SSascha Wildner 58*479ab7f0SSascha Wildner #define HALF_BITS (sizeof(int) * CHAR_BIT / 2) 59*479ab7f0SSascha Wildner 60*479ab7f0SSascha Wildner #define HHALF(x) ((x) >> HALF_BITS) 61*479ab7f0SSascha Wildner #define LHALF(x) ((x) & ((1 << HALF_BITS) - 1)) 62*479ab7f0SSascha Wildner 63*479ab7f0SSascha Wildner u_quad_t __udivmoddi4 (u_quad_t, u_quad_t, u_quad_t *); 64*479ab7f0SSascha Wildner u_quad_t __udivdi3 (u_quad_t, u_quad_t); 65*479ab7f0SSascha Wildner u_quad_t __umoddi3 (u_quad_t, u_quad_t); 66*479ab7f0SSascha Wildner 67*479ab7f0SSascha Wildner #endif /* !_STAND_QUAD_H_ */ 68