I am inputting three sinusoidal signals from sensors to the ADC of an eZdsp that I am
programming with Simulink.  Each of these are 60 Hz waveforms (These are not voltages of a
power system, the phases are not 120 degrees apart).

I need to use Simulink to determine the magnitude and phase of all three of these waveforms
with respect to each other.  I understand that there is a block in the SimPowerSystems library
that outputs the magnitude and phase of three-phase voltages or currents.  I do not have access
to this library, but I would like to implement similar functionality on my own.

Any assistance in this matter will be greatly appreciated.  Thanks.