Manpage of ATOI
ATOI
Section: NEWLIB (3)
Updated: 2005 Feb 23
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NAME
1.8 `atoi', `atol'--string to integer
SYNOPSIS
#include <stdlib.h>
int atoi(const char *S);
long atol(const char *S);
int _atoi_r(struct _reent *PTR, const char *S);
long _atol_r(struct _reent *PTR, const char *S);
DESCRIPTION
`atoi' converts the initial portion of a string to an `int'. `atol'
converts the initial portion of a string to a `long'.
`atoi(s)' is implemented as `(int)strtol(s, NULL, 10).' `atol(s)' is
implemented as `strtol(s, NULL, 10).'
`_atoi_r' and `_atol_r' are reentrant versions of `atoi' and `atol'
respectively, passing the reentrancy struct pointer.
RETURNS
The functions return the converted value, if any. If no conversion was
made, `0' is returned.
PORTABILITY
`atoi', `atol' are ANSI.
No supporting OS subroutines are required.
SEE ALSO
atoi
is part of the
libc
library.
The full documentation for
libc
is maintained as a Texinfo manual. If
info
and
libc
are properly installed at your site, the command
-
info libc
will give you access to the complete manual.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURNS
-
- PORTABILITY
-
- SEE ALSO
-
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