1.\" Copyright (c) 1990, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. All advertising materials mentioning features or use of this software 17.\" must display the following acknowledgement: 18.\" This product includes software developed by the University of 19.\" California, Berkeley and its contributors. 20.\" 4. Neither the name of the University nor the names of its contributors 21.\" may be used to endorse or promote products derived from this software 22.\" without specific prior written permission. 23.\" 24.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34.\" SUCH DAMAGE. 35.\" 36.\" @(#)atol.3 8.1 (Berkeley) 6/4/93 37.\" $FreeBSD: src/lib/libc/stdlib/atol.3,v 1.13 2002/01/09 14:03:54 ru Exp $ 38.\" $DragonFly: src/lib/libc/stdlib/atol.3,v 1.3 2005/11/01 18:16:52 swildner Exp $ 39.\" 40.Dd November 28, 2001 41.Dt ATOL 3 42.Os 43.Sh NAME 44.Nm atol , atoll 45.Nd convert 46.Tn ASCII 47string to 48.Vt long 49or 50.Vt "long long" 51integer 52.Sh LIBRARY 53.Lb libc 54.Sh SYNOPSIS 55.In stdlib.h 56.Ft long 57.Fn atol "const char *nptr" 58.Ft "long long" 59.Fn atoll "const char *nptr" 60.Sh DESCRIPTION 61The 62.Fn atol 63function converts the initial portion of the string pointed to by 64.Fa nptr 65to 66.Vt long 67integer 68representation. 69.Pp 70It is equivalent to: 71.Pp 72.Dl "strtol(nptr, (char **)NULL, 10);" 73.Pp 74The 75.Fn atoll 76function converts the initial portion of the string pointed to by 77.Fa nptr 78to 79.Vt "long long" 80integer 81representation. 82.Pp 83It is equivalent to: 84.Pp 85.Dl "strtoll(nptr, (char **)NULL, 10);" 86.Sh ERRORS 87The functions 88.Fn atol 89and 90.Fn atoll 91need not 92affect the value of 93.Va errno 94on an error. 95.Sh SEE ALSO 96.Xr atof 3 , 97.Xr atoi 3 , 98.Xr strtod 3 , 99.Xr strtol 3 , 100.Xr strtoul 3 101.Sh STANDARDS 102The 103.Fn atol 104function 105conforms to 106.St -isoC . 107The 108.Fn atoll 109function 110conforms to 111.St -isoC-99 . 112