`complex64` and `complex128` are currently excluded in from being generated by `Generate` method for quick check

[chewxy]

From @chewxy on August 28, 2017 9:17

What happens for Generate() is that testing/quick will generate really huge complex numbers, such that when it's Pow'd it becomes +Inf+Infi instead of returning the identity.

Example:

var identity complex128 = 1
x := 1.2137443348035267e+308+1.5113294366498325e+308i
y := cmplx.Pow(x, identity)
// returns (+Inf+Infi)

This causes tests and the CI to fail, therefore it's been temporarily removed until we can figure out the right thing to do

Copied from original issue: gorgonia/gorgonia#143