Is it possible to detect *which* trap signal in bash?

Possible Duplicate:
Identifying received signal name in bash shell script

When using something like trap func_trap INT TERM EXIT with:

func_trap () {
    ...some commands...
}

Is there a way in the function block to detect which trap has called it?

Something like:

func_trap () {
    if signal = INT; then
        # do this
    else
        # do that
    fi
}

Or do I need to write a separate function for each trap type that does something different? Is there a bash variable that holds the latest received signal?

Thanks in advance!