RobotC-how do I tell how many transmitters are active

In MPLabs was a field that had a bit on for each transmitter/receiver that was working.
Vaue
0-No transmitters on
1-Trans 1
2-Trans 2
3-Both trans 1 and trans 2 are on

Is there a variable in RobotC that will tell me the same thing?

Thanks!

I got an answer back from Tech Support on using the nVexRCReceiveState function.

nVexRCReceiveState
// No Crystals = 0
// One Transmitter = 1
// Two Transmitter = 2
// One and Two Transmitter = 3
// One VEXnet = 8
// Two VEXnet = 10