...
GN_D16, 16bit unsigned division
GN_M16, 16bit unsigned multiplication
GN_D24, 24bit unsigned division
GN_M24, 24bit unsigned multiplication
GN_Gdn, convert an ASCII string to a binary number
GN_Pdn, write number as decimal ASCII string
GN_Phn, convert 32 bits integer to hexadecimal string