1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 24 */ 25 /* 26 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 27 * Use is subject to license terms. 28 */ 29 30 /* 31 * ceill(x) return the biggest integral value below x 32 * floorl(x) return the least integral value above x 33 * 34 * NOTE: aintl(x), anintl(x), ceill(x), floorl(x), and rintl(x) return result 35 * with the same sign as x's, including 0.0. 36 */ 37 38 #pragma weak ceill = __ceill 39 #pragma weak floorl = __floorl 40 41 #include "libm.h" 42 #include "longdouble.h" 43 44 static const long double qone = 1.0L; 45 46 long double 47 ceill(long double x) { 48 long double t; 49 50 if (!finitel(x)) 51 return (x + x); 52 t = rintl(x); 53 if (t >= x) /* already ceil(x) */ 54 return (t); 55 else /* t < x case: return t+1 */ 56 return (copysignl(t + qone, x)); 57 } 58 59 long double 60 floorl(long double x) { 61 long double t; 62 63 if (!finitel(x)) 64 return (x + x); 65 t = rintl(x); 66 if (t <= x) 67 return (t); /* already floor(x) */ 68 else /* x < t case: return t-1 */ 69 return (copysignl(t - qone, x)); 70 } 71