kstrtoint(9) [centos man page]

KSTRTOINT(9)						     Basic C Library Functions						      KSTRTOINT(9)

NAME

       kstrtoint - convert a string to an int

SYNOPSIS

       int kstrtoint(const char * s, unsigned int base, int * res);

ARGUMENTS

       s
	   The start of the string. The string must be null-terminated, and may also include a single newline before its terminating null. The
	   first character may also be a plus sign or a minus sign.

       base
	   The number base to use. The maximum supported base is 16. If base is given as 0, then the base of the string is automatically detected
	   with the conventional semantics - If it begins with 0x the number will be parsed as a hexadecimal (case insensitive), if it otherwise
	   begins with 0, it will be parsed as an octal number. Otherwise it will be parsed as a decimal.

       res
	   Where to write the result of the conversion on success.

DESCRIPTION

       Returns 0 on success, -ERANGE on overflow and -EINVAL on parsing error. Used as a replacement for the obsolete simple_strtoull. Return code
       must be checked.

COPYRIGHT

Kernel Hackers Manual 3.10					     June 2014							      KSTRTOINT(9)

strtoimax(3C)															     strtoimax(3C)

NAME

       strtoimax(), strtoumax() - convert string to integer

SYNOPSIS

DESCRIPTION

       or  converts  the  character  string pointed to by str to or representation, respectively.  The string is scanned up to the first character
       inconsistent with the base.  Leading ``white-space'' characters (as defined by in ctype(3C)) are ignored.  If no conversion can take place,
       zero is returned.

       If base is greater than or equal to 2 and less than or equal to 36, it is used as the base for conversion.  After an optional leading sign,
       leading zeros are ignored, and or is ignored if base is 16.

       If base is zero, the string itself determines the base as follows: after an optional leading sign, a leading zero indicates  octal  conver-
       sion; a leading or indicates hexadecimal conversion.  Otherwise, decimal conversion is used.

       If  the	value  of ptr is not a pointer to the character terminating the scan is returned in the location pointed to by ptr.  If no integer
       can be formed, the location pointed to by ptr is set to str, and zero is returned.

RETURN VALUE

       Upon successful completion, all functions return the converted value, if any.

       If the correct value would cause overflow:

	      returns		or (according to the sign of the value), and sets to

	      returns		and sets to

       For all other errors, zero is returned and is set to indicate the error.

ERRORS

       and fail and is set, if any of the following conditions are encountered:

	      The value of   base is not supported.

	      The value to be returned would have caused overflow.

AUTHOR

       and were developed by HP.

SEE ALSO

       ctype(3C), strtod(3C), strtol(3C), scanf(3S), thread_safety(5).

STANDARDS CONFORMANCE

																     strtoimax(3C)