25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER START
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * The contents of this file are subject to the terms of the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Common Development and Distribution License (the "License").
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You may not use this file except in compliance with the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * or http://www.opensolaris.org/os/licensing.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * See the License for the specific language governing permissions
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * and limitations under the License.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * When distributing Covered Code, include this CDDL HEADER in each
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * If applicable, add the following below this CDDL HEADER, with the
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * fields enclosed by brackets "[]" replaced with your own identifying
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * information: Portions Copyright [yyyy] [name of copyright owner]
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * CDDL HEADER END
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Use is subject to license terms.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * lrint(x) rounds its argument to the nearest integer according
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * to the current rounding direction and converts the result to
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * a 32 bit signed integer.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * If x is NaN, infinite, or so large that the nearest integer
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * would exceed 32 bits, the invalid operation exception is raised.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * If x is not an integer, the inexact exception is raised.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * Note: The following code works on x86 (in the default rounding
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * precision mode), but one should just use the fistpl instruction
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis unsigned i[2];
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis /* add and subtract a power of two to round x to an integer */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis yy.i[HIWORD] = (xx.i[HIWORD] & 0x80000000) | 0x43300000;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis yy.i[HIWORD] = (xx.i[HIWORD] & 0x80000000) | 0x43e00000;
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis /* now x is nan, inf, or integral */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return ((long) x);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis#endif /* defined(_ILP32) */