1*235f3e57Sriastradh /* $NetBSD: ffsll.c,v 1.1 2024/11/01 18:35:12 riastradh Exp $ */ 2*235f3e57Sriastradh 3*235f3e57Sriastradh /*- 4*235f3e57Sriastradh * Copyright (c) 2024 The NetBSD Foundation, Inc. 5*235f3e57Sriastradh * All rights reserved. 6*235f3e57Sriastradh * 7*235f3e57Sriastradh * Redistribution and use in source and binary forms, with or without 8*235f3e57Sriastradh * modification, are permitted provided that the following conditions 9*235f3e57Sriastradh * are met: 10*235f3e57Sriastradh * 1. Redistributions of source code must retain the above copyright 11*235f3e57Sriastradh * notice, this list of conditions and the following disclaimer. 12*235f3e57Sriastradh * 2. Redistributions in binary form must reproduce the above copyright 13*235f3e57Sriastradh * notice, this list of conditions and the following disclaimer in the 14*235f3e57Sriastradh * documentation and/or other materials provided with the distribution. 15*235f3e57Sriastradh * 16*235f3e57Sriastradh * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17*235f3e57Sriastradh * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18*235f3e57Sriastradh * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19*235f3e57Sriastradh * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20*235f3e57Sriastradh * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21*235f3e57Sriastradh * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22*235f3e57Sriastradh * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23*235f3e57Sriastradh * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24*235f3e57Sriastradh * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25*235f3e57Sriastradh * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26*235f3e57Sriastradh * POSSIBILITY OF SUCH DAMAGE. 27*235f3e57Sriastradh */ 28*235f3e57Sriastradh 29*235f3e57Sriastradh #include <sys/cdefs.h> 30*235f3e57Sriastradh __RCSID("$NetBSD: ffsll.c,v 1.1 2024/11/01 18:35:12 riastradh Exp $"); 31*235f3e57Sriastradh 32*235f3e57Sriastradh #include <sys/bitops.h> 33*235f3e57Sriastradh 34*235f3e57Sriastradh #include <limits.h> 35*235f3e57Sriastradh #include <strings.h> 36*235f3e57Sriastradh 37*235f3e57Sriastradh #undef ffsll /* paranoia */ 38*235f3e57Sriastradh 39*235f3e57Sriastradh int 40*235f3e57Sriastradh ffsll(long long x) 41*235f3e57Sriastradh { 42*235f3e57Sriastradh 43*235f3e57Sriastradh __CTASSERT(CHAR_BIT*sizeof(x) == 64); 44*235f3e57Sriastradh return ffs64(x); 45*235f3e57Sriastradh } 46