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
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25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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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 * rintl(long double x) return x rounded to integral according to
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * the prevailing rounding direction
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * NOTE: aintl(x), anintl(x), ceill(x), floorl(x), and rintl(x) return result
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis * with the same sign as x's, including 0.0L.
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtisextern enum fp_precision_type __swapRP(enum fp_precision_type);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return (x + x);
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis if (*(int *) &one != 0) { /* set two112 = 2^112 */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return (x); /* already an integer */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis rp = __swapRP(fp_extended); /* make sure precision is long double */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis w = x + t; /* x+sign(x)*2^112 rounded to integer */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis (void) __swapRP(rp); /* restore precision mode */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return (copysignl(qzero, x)); /* x rounded to zero */
25c28e83beb90e7c80452a7c818c5e6f73a07dc8Piotr Jasiukajtis return (w - t);