text: \echo Use "CREATE EXTENSION check_digits" to load this file. \quit
  
  CREATE OR REPLACE FUNCTION check_digits_inn(inn text)
  RETURNS boolean
  AS 'MODULE_PATHNAME'
  LANGUAGE C IMMUTABLE STRICT;
  
  CREATE OR REPLACE FUNCTION check_digits_okpo(okpo text)
  RETURNS boolean
  AS 'MODULE_PATHNAME'
  LANGUAGE C IMMUTABLE STRICT;
  
  CREATE OR REPLACE FUNCTION check_digits_ogrn(ogrn text)
  RETURNS boolean
  AS 'MODULE_PATHNAME'
  LANGUAGE C IMMUTABLE STRICT;
  
  CREATE OR REPLACE FUNCTION check_digits_snils(snils text)
  RETURNS boolean
  AS 'MODULE_PATHNAME'
  LANGUAGE C IMMUTABLE STRICT;
  
  CREATE OR REPLACE FUNCTION check_digits_isbn(isbn text)
  RETURNS boolean
  AS 'MODULE_PATHNAME'
  LANGUAGE C IMMUTABLE STRICT;
  