[Discuss-gnuradio] How to ^2 or ^more for signal source from GRC

[Wipat phonsukkarn]

Does anybody knows how to power(^) the signal from the signal source block or USRP source
for example signal from signal source are coswt+jsinwt or Ae^(jwt) and i want to ^2 for the result = (Ae^(jwt))^2
Does the grc blocks have a ^ block?


Thank you very much for yours advice
Wipat