would some one tell me what is wrong with this function

Iget this error when I apply: Operation failed: There was an error while applying the SQL script to the database. ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FUNCTION `fn_number2words`(_Number double(18,2)) RETURNS varchar(8000) ' at line 1

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This is the Function

FUNCTION `fn_number2words`(_Number double(18,2))

RETURNS varchar(8000)

BEGIN

DECLARE _inputNumber VARCHAR(38);

DECLARE _outputString VARCHAR(8000);

DECLARE _length INT;

DECLARE _counter INT;

DECLARE _loops INT DEFAULT 0;

DECLARE _position INT;

DECLARE _chunk CHAR(3); -- for chunks of 3 numbers

DECLARE _tensones CHAR(2);

DECLARE _hundreds CHAR(1);

DECLARE _tens CHAR(1);

DECLARE _ones CHAR(1);

DECLARE _cents varchar(50);

DECLARE _numtmp1 varchar(50);

DECLARE _numtmp2 varchar(50);

DECLARE _numtmp3 varchar(50);

IF _Number = 0 THEN

SET _outputString = 'Zero';

ELSE

SET _cents = REPLACE(CAST((_Number % 1)*100 as char), '.00', '');

-- initialize the variables

SELECT REPLACE(CAST((_Number - (_Number % 1)) as char), '.00', ''),

'', 1

INTO _inputNumber, _outputString, _counter;

IF MOD(LENGTH(_inputNumber), 3) = 1 THEN

SET _inputNumber = CONCAT('00', _inputNumber);

ELSEIF MOD(LENGTH(_inputNumber), 3) = 2 THEN

SET _inputNumber = CONCAT('0', _inputNumber);

END IF;

SELECT LENGTH(_inputNumber), (LENGTH(_inputNumber)/3), LENGTH(_inputNumber)/3

INTO _length, _position, _loops;

WHILE _counter <= _loops DO

SET _chunk = SUBSTR(_inputNumber, ((_position-1)*3)+1, 3);

IF _chunk <> '000' THEN

SELECT

SUBSTR(_chunk, 2, 2), SUBSTR(_chunk, 1, 1), SUBSTR(_chunk, 2, 1), SUBSTR(_chunk, 3, 1)

INTO

_tensones,

_hundreds,

_tens,

_ones;

/*SELECT _inputNumber, _chunk, _tensones, _hundreds, _tens, _ones, _counter, _position, _loops, CAST(_tensones as UNSIGNED INT);*/

IF CAST(_tensones as UNSIGNED) <= 20 OR _ones='0' THEN

SELECT word INTO _numtmp1 FROM tbl_numbers WHERE number = _tensones;

SELECT CASE _counter

WHEN 1 THEN '' -- No name

WHEN 2 THEN ' thousand ' WHEN 3 THEN ' million '

WHEN 4 THEN ' billion ' WHEN 5 THEN ' trillion '

WHEN 6 THEN ' quadrillion ' WHEN 7 THEN ' quintillion '

WHEN 8 THEN ' sextillion ' WHEN 9 THEN ' septillion '

WHEN 10 THEN ' octillion ' WHEN 11 THEN ' nonillion '

WHEN 12 THEN ' decillion ' WHEN 13 THEN ' undecillion '

ELSE '' END

INTO _numtmp2;

SET _outputString = CONCAT(_numtmp1, _numtmp2, _outputString);

ELSE

SELECT word INTO _numtmp1 FROM tbl_numbers WHERE number = CONCAT(_tens,'0');

SELECT word INTO _numtmp2 FROM tbl_numbers WHERE number = CONCAT('0',_ones);

SELECT CASE _counter WHEN 1 THEN '' -- No name

WHEN 2 THEN ' thousand ' WHEN 3 THEN ' million '

WHEN 4 THEN ' billion ' WHEN 5 THEN ' trillion '

WHEN 6 THEN ' quadrillion ' WHEN 7 THEN ' quintillion '

WHEN 8 THEN ' sextillion ' WHEN 9 THEN ' septillion '

WHEN 10 THEN ' octillion ' WHEN 11 THEN ' nonillion '

WHEN 12 THEN ' decillion ' WHEN 13 THEN ' undecillion '

ELSE '' END

INTO _numtmp3;

SET _outputString = CONCAT(' ',_numtmp1, '-',_numtmp2, _numtmp3, _outputString);

END IF;

-- now get the hundreds

IF _hundreds <> '0' THEN

SELECT word INTO _numtmp1 FROM tbl_numbers WHERE number = CONCAT('0',_hundreds);

SET _outputString = CONCAT(_numtmp1, ' hundred ', _outputString);

END IF;

END IF;

/* seed variables */

SELECT (_counter+1), (_position-1)

INTO _counter, _position;

END WHILE;

END IF;

IF RTRIM(LTRIM(_outputString)) = '' THEN

SET _outputString = '';

ELSE

SET _outputString = CONCAT(_outputString, ' PESOS AND ');

END IF;

SET _outputString = UPPER(CONCAT(_outputString,_cents,'/100 CENT(S)')); -- return the result

RETURN _outputString;

END

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Also, is there a better function that u guys know about that convert numbers to words ? Thanks..