Prepared statements and floats

I am playing with my own implementation of Google maps and I want to do it properly through prepared statements and mysqli object (not mysql as stated in the linked example) Also, I added "own registration" so I am afraid of SQL Injection. But, how do I bind Float value to the prepared statement? My table has (among others) `FLOAT` type columns: ``` CREATE TABLE `markers` ( `id` INT NOT NULL AUTO_INCREMENT PRIMARY KEY , `name` VARCHAR( 60 ) NOT NULL , `description` TEXT NOT NULL , `lat` FLOAT( 10, 6 ) NOT NULL , `lng` FLOAT( 10, 6 ) NOT NULL , ) ENGINE = MYISAM ; ``` But reading the manual I can see only these types: ``` Character Description i corresponding variable has type integer d corresponding variable has type double s corresponding variable has type string b corresponding variable is a blob and will be sent in packets ``` Should I assume that when column is a `FLOAT` i should use `b` for a blob? (because its not string and not a double value). And the same for `TEXT` type column?