2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
2N/A */
2N/A
2N/A#include "lint.h"
2N/A#include <string.h>
2N/A#include <strings.h>
2N/A#include <sys/types.h>
2N/A
2N/Astatic int
2N/Affs_impl(uint64_t bits)
2N/A{
2N/A int i = 1;
2N/A uint32_t bits32;
2N/A
2N/A if (bits == 0)
2N/A return (0);
2N/A
2N/A if ((bits32 = (uint32_t)bits) == 0) {
2N/A bits32 = (uint32_t)(bits >> 32);
2N/A i += 32;
2N/A }
2N/A
2N/A if ((bits32 & 0xffff) == 0) {
2N/A bits32 >>= 16;
2N/A i += 16;
2N/A }
2N/A if ((bits32 & 0xff) == 0) {
2N/A bits32 >>= 8;
2N/A i += 8;
2N/A }
2N/A if ((bits32 & 0xf) == 0) {
2N/A bits32 >>= 4;
2N/A i += 4;
2N/A }
2N/A if ((bits32 & 0x3) == 0) {
2N/A bits32 >>= 2;
2N/A i += 2;
2N/A }
2N/A if ((bits32 & 0x1) == 0)
2N/A i += 1;
2N/A
2N/A return (i);
2N/A}
2N/A
2N/Aint
2N/Affs(int bits)
2N/A{
2N/A return (ffs_impl((uint64_t)(uint_t)bits));
2N/A}
2N/A
2N/Aint
2N/Affsl(long bits)
2N/A{
2N/A return (ffs_impl((uint64_t)(ulong_t)bits));
2N/A}
2N/A
2N/Aint
2N/Affsll(long long bits)
2N/A{
2N/A return (ffs_impl((uint64_t)(u_longlong_t)bits));
2N/A}