.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" the American National Standards Committee X3, on Information
.\" Processing Systems.
.\"
.\" %sccs.include.redist.man%
.\"
.\"     @(#)atol.3	5.3 (Berkeley) 06/29/91
.\"
.Dd 
.Dt ATOL 3
.Os
.Sh NAME
.Nm atol
.Nd convert
.Tn ASCII
string to long integer
.Sh SYNOPSIS
.Fd #include <stdlib.h>
.Ft long
.Fn atol "const char *nptr"
.Sh DESCRIPTION
The
.Fn atol
function converts the initial portion of the string pointed to by
.Ar nptr
to
.Em long integer
representation.
.Pp
It is equivalent to:
.Bd -literal -offset indent
strtol(nptr, (char **)NULL, 10);
.Ed
.Sh SEE ALSO
.Xr atof 3 ,
.Xr atoi 3 ,
.Xr strtod 3 ,
.Xr strtol 3 ,
.Xr strtoul 3
.Sh STANDARDS
The
.Fn atol
function
conforms to
.St -ansiC .