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atoi(3)                  BSD Library Functions Manual                  atoi(3)


NAME

     atoi, atoi_l -- convert ASCII string to integer


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <stdlib.h>

     int
     atoi(const char *str);

     #include <xlocale.h>

     int
     atoi_l(const char *str, locale_t loc);


DESCRIPTION

     The atoi() function converts the initial portion of the string pointed to
     by str to int representation.

     It is equivalent to:

           (int)strtol(str, (char **)NULL, 10);

     While the atoi() function uses the current locale, the atoi_l() function
     may be passed a locale directly. See xlocale(3) for more information.


IMPLEMENTATION NOTES

     The atoi() and atoi_l() functions are thread-safe and async-cancel-safe.

     The atoi() and atoi_l() functions have been deprecated by strtol() and
     strtol_l() and should not be used in new code.


ERRORS

     The function atoi() need not affect the value of errno on an error.


SEE ALSO

     atof(3), atol(3), strtod(3), strtol(3), strtoul(3), xlocale(3)


STANDARDS

     The atoi() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''),
     ISO/IEC 9899:1990 (``ISO C90''), and ISO/IEC 9899:1999 (``ISO C99'').

BSD                              June 4, 1993                              BSD

Mac OS X 10.8 - Generated Sun Aug 26 12:30:28 CDT 2012
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