1.\" Copyright (c) 1990, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" %sccs.include.redist.man% 5.\" 6.\" @(#)atol.3 5.2 (Berkeley) 04/19/91 7.\" 8.Dd 9.Dt ATOL 3 10.Os 11.Sh NAME 12.Nm atol 13.Nd convert 14.Tn ASCII 15string to long integer 16.Sh SYNOPSIS 17.Fd #include <stdlib.h> 18.Ft long 19.Fn atol "const char *nptr" 20.Sh DESCRIPTION 21The 22.Fn atol 23function converts the initial portion of the string pointed to by 24.Ar nptr 25to 26.Em long integer 27representation. 28.Pp 29It is equivalent to: 30.Bd -literal -offset indent 31strtol(nptr, (char **)NULL, 10); 32.Ed 33.Sh SEE ALSO 34.Xr atof 3 , 35.Xr atoi 3 , 36.Xr strtod 3 , 37.Xr strtol 3 , 38.Xr strtoul 3 39.Sh STANDARDS 40The 41.Fn atol 42function 43conforms to 44.St -ansiC . 45