/*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * From: * @(#)quad.h 8.1 (Berkeley) 6/4/93 * NetBSD: quad.h,v 1.1 2005/12/20 20:29:40 christos Exp */ /* * Long long arithmetic. * * This library makes the following assumptions: * * - The type long long exists. * * - A long long variable is exactly twice as long as `int'. * * - The machine's arithmetic is two's complement. * * This library can provide 128-bit arithmetic on a machine with * 128-bit long longs and 64-bit ints, for instance, or 96-bit * arithmetic on machines with 48-bit ints. * * The names are built into gcc. */ #if defined(_KERNEL) #include <types.h> #include <endian.h> #else #include <sys/types.h> #include <sys/endian.h> #endif #include <limits.h> /* * Depending on the desired operation, we view a `long long' in * one or more of the following formats. */ union uu { long long ll; /* as a (signed) long long */ unsigned long long ull; /* as an unsigned long long */ int si[2]; /* as two (signed) ints */ unsigned int ui[2]; /* as two unsigned ints */ }; /* * Define high and low parts of a long long. */ #if _BYTE_ORDER == _LITTLE_ENDIAN #define H 1 #define L 0 #endif #if _BYTE_ORDER == _BIG_ENDIAN #define H 0 #define L 1 #endif /* * Total number of bits in a long long and in the pieces that make it up. * These are used for shifting, and also below for halfword extraction * and assembly. */ #define LONGLONG_BITS (sizeof(long long) * CHAR_BIT) #define INT_BITS (sizeof(int) * CHAR_BIT) #define HALF_BITS (sizeof(int) * CHAR_BIT / 2) /* * Extract high and low shortwords from longword, and move low shortword of * longword to upper half of long, i.e., produce the upper longword of * ((long long)(x) << (number_of_bits_in_int/2)). * [`x' must actually be unsigned int.] * * These are used in the multiply code, to split a longword into upper * and lower halves, and to reassemble a product as a long long, shifted * left (sizeof(int)*CHAR_BIT/2). */ #define HHALF(x) ((unsigned int)(x) >> HALF_BITS) #define LHALF(x) ((unsigned int)(x) & (((int)1 << HALF_BITS) - 1)) #define LHUP(x) ((unsigned int)(x) << HALF_BITS) long long __adddi3 ( long long, long long); long long __anddi3 ( long long, long long); long long __ashldi3 ( long long, unsigned int); long long __ashrdi3 ( long long, unsigned int); int __cmpdi2 ( long long, long long); long long __divdi3 ( long long, long long); long long __iordi3 ( long long, long long); long long __lshldi3 ( long long, unsigned int); long long __lshrdi3 ( long long, unsigned int); long long __moddi3 ( long long, long long); long long __muldi3 ( long long, long long); long long __negdi2 ( long long); long long __one_cmpldi2 ( long long); long long __subdi3 ( long long, long long); int __ucmpdi2 (unsigned long long, unsigned long long); unsigned long long __udivdi3 (unsigned long long, unsigned long long); unsigned long long __umoddi3 (unsigned long long, unsigned long long); long long __xordi3 ( long long, long long); #ifndef _KERNEL long long __fixdfdi (double); long long __fixsfdi (float); unsigned long long __fixunsdfdi (double); unsigned long long __fixunssfdi (float); double __floatdidf (long long); float __floatdisf (long long); double __floatunsdidf(unsigned long long); #endif unsigned long long __qdivrem (unsigned long long, unsigned long long, unsigned long long *);