This section contains commonly used primitive data types.

The use of the Interface Definition Language (IDL) implies RPC marshaling unless custom marshalling is specified.

Unless explicitly noted in this document, any integer, either signed or unsigned, is in memory order before RPC marshalling. It is implementation dependent<1> whether the memory order is little-endian or big-endian.

For packets, the bit numbering convention followed is the same as that used in RFCs, namely: the high bit of the first byte to hit the wire is in packet bit 0, and the low bit of the last byte to hit the wire is in packet bit 31 (so that the bits are shown from left-to-right in the order they naturally appear over the network).

So for example, on a little-endian system using a 32-bit field, the following table shows the correct correspondence between packet bit number and value on a little-endian system.