modReLU seems to just increase the magnitude of the input value, and rotate it to the original polar angle. With clipping off negative magnitudes. Or equivalen

modReLU seems to just increase the magnitude of the input value, and rotate it to the original polar angle. With clipping off negative magnitudes. Or equivalently rotates a (real) bias term with the input angle and adds that into the original. (abs(z) + c)*exp(i*arg(z)) = abs(z)*exp(i*arg(z)) + c*exp(i*arg(z)) = z + c*exp(i*arg(z))