1*25c28e83SPiotr Jasiukajtis /* 2*25c28e83SPiotr Jasiukajtis * CDDL HEADER START 3*25c28e83SPiotr Jasiukajtis * 4*25c28e83SPiotr Jasiukajtis * The contents of this file are subject to the terms of the 5*25c28e83SPiotr Jasiukajtis * Common Development and Distribution License (the "License"). 6*25c28e83SPiotr Jasiukajtis * You may not use this file except in compliance with the License. 7*25c28e83SPiotr Jasiukajtis * 8*25c28e83SPiotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*25c28e83SPiotr Jasiukajtis * or http://www.opensolaris.org/os/licensing. 10*25c28e83SPiotr Jasiukajtis * See the License for the specific language governing permissions 11*25c28e83SPiotr Jasiukajtis * and limitations under the License. 12*25c28e83SPiotr Jasiukajtis * 13*25c28e83SPiotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each 14*25c28e83SPiotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*25c28e83SPiotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the 16*25c28e83SPiotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying 17*25c28e83SPiotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner] 18*25c28e83SPiotr Jasiukajtis * 19*25c28e83SPiotr Jasiukajtis * CDDL HEADER END 20*25c28e83SPiotr Jasiukajtis */ 21*25c28e83SPiotr Jasiukajtis /* 22*25c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 23*25c28e83SPiotr Jasiukajtis */ 24*25c28e83SPiotr Jasiukajtis /* 25*25c28e83SPiotr Jasiukajtis * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 26*25c28e83SPiotr Jasiukajtis * Use is subject to license terms. 27*25c28e83SPiotr Jasiukajtis */ 28*25c28e83SPiotr Jasiukajtis 29*25c28e83SPiotr Jasiukajtis #ifndef _LIBM_MACROS_H 30*25c28e83SPiotr Jasiukajtis #define _LIBM_MACROS_H 31*25c28e83SPiotr Jasiukajtis 32*25c28e83SPiotr Jasiukajtis #include <sys/isa_defs.h> 33*25c28e83SPiotr Jasiukajtis 34*25c28e83SPiotr Jasiukajtis #if defined(__sparc) 35*25c28e83SPiotr Jasiukajtis 36*25c28e83SPiotr Jasiukajtis #define HIWORD 0 37*25c28e83SPiotr Jasiukajtis #define LOWORD 1 38*25c28e83SPiotr Jasiukajtis #define HIXWORD 0 /* index of int containing exponent */ 39*25c28e83SPiotr Jasiukajtis #define XSGNMSK 0x80000000 /* exponent bit mask within the int */ 40*25c28e83SPiotr Jasiukajtis #define XBIASED_EXP(x) ((((int *)&x)[HIXWORD] & ~0x80000000) >> 16) 41*25c28e83SPiotr Jasiukajtis #define ISZEROL(x) (((((int *)&x)[0] & ~XSGNMSK) | ((int *)&x)[1] | \ 42*25c28e83SPiotr Jasiukajtis ((int *)&x)[2] | ((int *)&x)[3]) == 0) 43*25c28e83SPiotr Jasiukajtis 44*25c28e83SPiotr Jasiukajtis #elif defined(__x86) 45*25c28e83SPiotr Jasiukajtis 46*25c28e83SPiotr Jasiukajtis #define HIWORD 1 47*25c28e83SPiotr Jasiukajtis #define LOWORD 0 48*25c28e83SPiotr Jasiukajtis #define HIXWORD 2 49*25c28e83SPiotr Jasiukajtis #define XSGNMSK 0x8000 50*25c28e83SPiotr Jasiukajtis #define XBIASED_EXP(x) (((int *)&x)[HIXWORD] & 0x7fff) 51*25c28e83SPiotr Jasiukajtis #define ISZEROL(x) (x == 0.0L) 52*25c28e83SPiotr Jasiukajtis 53*25c28e83SPiotr Jasiukajtis #define HANDLE_UNSUPPORTED 54*25c28e83SPiotr Jasiukajtis 55*25c28e83SPiotr Jasiukajtis /* 56*25c28e83SPiotr Jasiukajtis * "convert" the high-order 32 bits of a SPARC quad precision 57*25c28e83SPiotr Jasiukajtis * value ("I") to the sign, exponent, and high-order bits of an 58*25c28e83SPiotr Jasiukajtis * x86 extended double precision value ("E"); the low-order bits 59*25c28e83SPiotr Jasiukajtis * in the 12-byte quantity are left intact 60*25c28e83SPiotr Jasiukajtis */ 61*25c28e83SPiotr Jasiukajtis #define ITOX(I, E) \ 62*25c28e83SPiotr Jasiukajtis E[2] = 0xffff & ((I) >> 16); \ 63*25c28e83SPiotr Jasiukajtis E[1] = (((I) & 0x7fff0000) == 0)? \ 64*25c28e83SPiotr Jasiukajtis (E[1] & 0x7fff) | (0x7fff8000 & ((I) << 15)) :\ 65*25c28e83SPiotr Jasiukajtis 0x80000000 | (E[1] & 0x7fff) | (0x7fff8000 & ((I) << 15)) 66*25c28e83SPiotr Jasiukajtis 67*25c28e83SPiotr Jasiukajtis /* 68*25c28e83SPiotr Jasiukajtis * "convert" the sign, exponent, and high-order bits of an x86 69*25c28e83SPiotr Jasiukajtis * extended double precision value ("E") to the high-order 32 bits 70*25c28e83SPiotr Jasiukajtis * of a SPARC quad precision value ("I") 71*25c28e83SPiotr Jasiukajtis */ 72*25c28e83SPiotr Jasiukajtis #define XTOI(E, I) \ 73*25c28e83SPiotr Jasiukajtis I = ((E[2]<<16) | (0xffff & (E[1]>>15))) 74*25c28e83SPiotr Jasiukajtis 75*25c28e83SPiotr Jasiukajtis #else 76*25c28e83SPiotr Jasiukajtis #error Unknown architecture 77*25c28e83SPiotr Jasiukajtis #endif 78*25c28e83SPiotr Jasiukajtis 79*25c28e83SPiotr Jasiukajtis #endif /* _LIBM_MACROS_H */ 80