1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
.\" 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.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)atol.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd May 14, 2013
.Dt ATOL 3
.Os
.Sh NAME
.Nm atol , atoll
.Nd convert
.Tn ASCII
string to
.Vt long
or
.Vt "long long"
integer
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft long
.Fn atol "const char *nptr"
.Ft "long long"
.Fn atoll "const char *nptr"
.Sh DESCRIPTION
The
.Fn atol
function converts the initial portion of the string pointed to by
.Fa nptr
to
.Vt long
integer
representation.
.Pp
It is equivalent to:
.Pp
.Dl "strtol(nptr, (char **)NULL, 10);"
.Pp
The
.Fn atoll
function converts the initial portion of the string pointed to by
.Fa nptr
to
.Vt "long long"
integer
representation.
.Pp
It is equivalent to:
.Pp
.Dl "strtoll(nptr, (char **)NULL, 10);"
.Sh COMPATIBILITY
The
.Fx
implementations of the
.Fn atol
and
.Fn atoll
functions are thin wrappers around
.Fn strtol
and
.Fn strtoll
respectively, so these functions will affect the value of
.Va errno
in the same way that the
.Fn strtol
and
.Fn strtoll
functions are able to.
This behavior of
.Fn atol
and
.Fn atoll
is not required by
.St -isoC
or
.St -isoC-99 ,
but it is allowed by all of
.St -isoC , St -isoC-99
and
.St -p1003.1-2001 .
.Sh ERRORS
The functions
.Fn atol
and
.Fn atoll
may affect the value of
.Va errno
on an error.
.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 -isoC .
The
.Fn atoll
function
conforms to
.St -isoC-99 .
|
