Are there unsigned int types in the manual

    Is there somewhere in the manual that specifies if there is an
unsigned int type for Postgressql. In an online manual I I see the int2,
int4, and int8 types, but they are signed. I'm looking for an unsigned 2
byte and 4 byte type that goes from 0 to 65535, and 0 to 4.2 billion,
respectively. Are they specified anywhere?

Thanks,
Mike