freebsd-nq/lib/libc/stdlib/atol.3

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.\" Copyright (c) 1990, 1991, 1993
.\" 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.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
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.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
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.\" @(#)atol.3 8.1 (Berkeley) 6/4/93
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.\" $FreeBSD$
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.\"
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.Dd November 28, 2001
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.Dt ATOL 3
.Os
.Sh NAME
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.Nm atol , atoll
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.Nd convert
.Tn ASCII
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string to
.Vt long
or
.Vt "long long"
integer
.Sh LIBRARY
.Lb libc
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.Sh SYNOPSIS
.In stdlib.h
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.Ft long
.Fn atol "const char *nptr"
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.Ft "long long"
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.Fn atoll "const char *nptr"
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.Sh DESCRIPTION
The
.Fn atol
function converts the initial portion of the string pointed to by
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.Fa nptr
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to
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.Vt long
integer
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representation.
.Pp
It is equivalent to:
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.Pp
.Dl "strtol(nptr, (char **)NULL, 10);"
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.Pp
The
.Fn atoll
function converts the initial portion of the string pointed to by
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.Fa nptr
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to
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.Vt "long long"
integer
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representation.
.Pp
It is equivalent to:
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.Pp
.Dl "strtoll(nptr, (char **)NULL, 10);"
.Sh ERRORS
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The functions
.Fn atol
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and
.Fn atoll
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need not
affect the value of
.Va errno
on an error.
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.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
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.St -isoC .
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The
.Fn atoll
function
conforms to
.St -isoC-99 .