TST: Add test to cover complex to complex64 downcast in weak promotion
TST: Add test to cover complex to complex64 downcast in weak promotion

numpy/numpy,charris/numpy,mattip/numpy,endolith/numpy,endolith/numpy,mattip/numpy,charris/numpy,mattip/numpy,charris/numpy,charris/numpy,mattip/numpy,numpy/numpy,endolith/numpy,numpy/numpy,numpy/numpy,endolith/numpy