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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/types.h> 28 29 /* 30 * function that will find a prime'ish number. Usefull for 31 * hashbuckets and related things. 32 */ 33 uint_t 34 findprime(uint_t count) 35 { 36 uint_t h, f; 37 38 if (count <= 3) 39 return (3); 40 41 42 /* 43 * Check to see if divisible by two, if so 44 * increment. 45 */ 46 if ((count & 0x1) == 0) 47 count++; 48 49 for (h = count, f = 2; f * f <= h; f++) 50 if ((h % f) == 0) 51 h += f = 1; 52 return (h); 53 } 54