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	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	.\"
	39	.Dd November 28, 2001
	40	.Dt ATOL 3
	41	.Os
	42	.Sh NAME
	43	.Nm atol , atoll
	44	.Nd convert
	45	.Tn ASCII
	46	string to
	47	.Vt long
	48	or
	49	.Vt "long long"
	50	integer
	51	.Sh LIBRARY
	52	.Lb libc
	53	.Sh SYNOPSIS
	54	.In stdlib.h
	55	.Ft long
	56	.Fn atol "const char *nptr"
	57	.Ft "long long"
	58	.Fn atoll "const char *nptr"
	59	.Sh DESCRIPTION
	60	The
	61	.Fn atol
	62	function converts the initial portion of the string pointed to by
	63	.Fa nptr
	64	to
	65	.Vt long
	66	integer
	67	representation.
	68	.Pp
	69	It is equivalent to:
	70	.Pp
	71	.Dl "strtol(nptr, (char **)NULL, 10);"
	72	.Pp
	73	The
	74	.Fn atoll
	75	function converts the initial portion of the string pointed to by
	76	.Fa nptr
	77	to
	78	.Vt "long long"
	79	integer
	80	representation.
	81	.Pp
	82	It is equivalent to:
	83	.Pp
	84	.Dl "strtoll(nptr, (char **)NULL, 10);"
	85	.Sh ERRORS
	86	The functions
	87	.Fn atol
	88	and
	89	.Fn atoll
	90	need not
	91	affect the value of
	92	.Va errno
	93	on an error.
	94	.Sh SEE ALSO
	95	.Xr atof 3 ,
	96	.Xr atoi 3 ,
	97	.Xr strtod 3 ,
	98	.Xr strtol 3 ,
	99	.Xr strtoul 3
	100	.Sh STANDARDS
	101	The
	102	.Fn atol
	103	function
	104	conforms to
	105	.St -isoC .
	106	The
	107	.Fn atoll
	108	function
	109	conforms to
	110	.St -isoC-99 .