title: Including ComplexExpr and ComplexFunc classes in Halide API
body: <p>The ComplexExpr and ComplexFunc classes in the links below seem very convenient to work with complex numbers. Is there a plan to include them into the official Halide API? Or is there a reason why they are not included?</p>
  <p><a href="https://github.com/halide/Halide/blob/master/apps/fft/complex.h" rel="nofollow noreferrer">https://github.com/halide/Halide/blob/master/apps/fft/complex.h</a></p>
  <p><a href="https://github.com/halide/Halide/blob/be1269b15f4ba8b83df5fa0ef1ae507017fe1a69/apps/fft/funct.h" rel="nofollow noreferrer">https://github.com/halide/Halide/blob/be1269b15f4ba8b83df5fa0ef1ae507017fe1a69/apps/fft/funct.h</a></p>