OpenVMS usage:longword_signed type: longword (signed) access: write only mechanism: by value Position in source-string where a nonmatch was found. On Alpha systems, if the relative position of the substring can exceed 2**32-1, assign the return value to a quadword to ensure that you retrieve the correct relative position. Returned Value Condition 0 Either all characters in source-string match some characters in set-of-characters, or there were no characters in set-of-characters. 1 Either the first nonmatching character in source- string was found in position 1, or there were no characters in source-string. N The first nonmatching character was found in position N within source-string.