suse man page for get_option

GET_OPTION(9)						  Basic Kernel Library Functions					     GET_OPTION(9)

NAME
       get_option - Parse integer from an option string

SYNOPSIS
       int get_option(char ** str, int * pint);

ARGUMENTS
       str
	   option string

       pint
	   (output) integer value parsed from str

DESCRIPTION
       Read an int from an option string; if available accept a subsequent comma as well.

RETURN VALUES
       0 - no int in string 1 - int found, no subsequent comma 2 - int found including a subsequent comma 3 - hyphen found to denote a range

COPYRIGHT
Kernel Hackers Manual 2.6.					     July 2010							     GET_OPTION(9)