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.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)atol.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD: src/lib/libc/stdlib/atol.3,v 1.14 2007/01/09 00:28:09 imp Exp $ 34.\" $DragonFly: src/lib/libc/stdlib/atol.3,v 1.3 2005/11/01 18:16:52 swildner Exp $ 35.\" 36.Dd November 28, 2001 37.Dt ATOL 3 38.Os 39.Sh NAME 40.Nm atol , 41.Nm atoll 42.Nd convert 43.Tn ASCII 44string to 45.Vt long 46or 47.Vt "long long" 48integer 49.Sh LIBRARY 50.Lb libc 51.Sh SYNOPSIS 52.In stdlib.h 53.Ft long 54.Fn atol "const char *nptr" 55.Ft "long long" 56.Fn atoll "const char *nptr" 57.Sh DESCRIPTION 58The 59.Fn atol 60function converts the initial portion of the string pointed to by 61.Fa nptr 62to 63.Vt long 64integer 65representation. 66.Pp 67It is equivalent to: 68.Pp 69.Dl "strtol(nptr, NULL, 10);" 70.Pp 71The 72.Fn atoll 73function converts the initial portion of the string pointed to by 74.Fa nptr 75to 76.Vt "long long" 77integer 78representation. 79.Pp 80It is equivalent to: 81.Pp 82.Dl "strtoll(nptr, NULL, 10);" 83.Sh ERRORS 84The functions 85.Fn atol 86and 87.Fn atoll 88need not 89affect the value of 90.Va errno 91on an error. 92.Sh SEE ALSO 93.Xr atof 3 , 94.Xr atoi 3 , 95.Xr strtod 3 , 96.Xr strtol 3 , 97.Xr strtoul 3 98.Sh STANDARDS 99The 100.Fn atol 101function 102conforms to 103.St -isoC . 104The 105.Fn atoll 106function 107conforms to 108.St -isoC-99 . 109