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 /* 23*25c28e83SPiotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24*25c28e83SPiotr Jasiukajtis */ 25*25c28e83SPiotr Jasiukajtis /* 26*25c28e83SPiotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27*25c28e83SPiotr Jasiukajtis * Use is subject to license terms. 28*25c28e83SPiotr Jasiukajtis */ 29*25c28e83SPiotr Jasiukajtis 30*25c28e83SPiotr Jasiukajtis #if defined(ELFOBJ) 31*25c28e83SPiotr Jasiukajtis #pragma weak isnanl = __isnanl 32*25c28e83SPiotr Jasiukajtis #endif 33*25c28e83SPiotr Jasiukajtis 34*25c28e83SPiotr Jasiukajtis #include "libm.h" 35*25c28e83SPiotr Jasiukajtis 36*25c28e83SPiotr Jasiukajtis #if defined(__sparc) 37*25c28e83SPiotr Jasiukajtis int 38*25c28e83SPiotr Jasiukajtis isnanl(long double x) { 39*25c28e83SPiotr Jasiukajtis int *px = (int *) &x; 40*25c28e83SPiotr Jasiukajtis return ((px[0] & ~0x80000000) >= 0x7fff0000 && 41*25c28e83SPiotr Jasiukajtis ((px[0] & ~0xffff0000) | px[1] | px[2] | px[3]) != 0); 42*25c28e83SPiotr Jasiukajtis } 43*25c28e83SPiotr Jasiukajtis #elif defined(__x86) 44*25c28e83SPiotr Jasiukajtis int 45*25c28e83SPiotr Jasiukajtis isnanl(long double x) { 46*25c28e83SPiotr Jasiukajtis int *px = (int *) &x, t = px[2] & 0x7fff; 47*25c28e83SPiotr Jasiukajtis #if defined(HANDLE_UNSUPPORTED) 48*25c28e83SPiotr Jasiukajtis return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0 || 49*25c28e83SPiotr Jasiukajtis t != 0 && (px[1] & 0x80000000) == 0); 50*25c28e83SPiotr Jasiukajtis #else 51*25c28e83SPiotr Jasiukajtis return (t == 0x7fff && ((px[1] & ~0x80000000) | px[0]) != 0); 52*25c28e83SPiotr Jasiukajtis #endif 53*25c28e83SPiotr Jasiukajtis } 54*25c28e83SPiotr Jasiukajtis #endif /* defined(__sparc) || defined(__x86) */ 55