Returns the greatest common divisor of two or more integers.
GCD(integer1; integer2; ... integer30)
GCD(16; 32; 24)
GCD will currently produce results with negative and fractional arguments. This has not been a documented feature, and it is planned that from OOo3.0 negative arguments will yield an error and that fractional arguments will be truncated prior to processing, in order to comply with the ODFF standard.