Function lookup has some type error in index array

[MarkJoe]

First import ArrayFire like this

import ArrayFire as AF

Then the following works with the Haskell ArrayFire bindings

m = matrix @Double (5,3) [[1,0,9.8,7.999,65,21],[0.9,6.4,2.2,1.2,2.3],[0,0,8.3,3.2,4.3]]
idx = vector @Double 2 [0,2]
AF.lookup  m idx 1

Using complex matrices will result in an error:

m = matrix @(Complex Double) (5,3) [[1 :+ 1,0,9.8,7.999,65,21],[0.9,6.4,2.2,1.2,2.3],[0,0,8.3,3.2,4.3]]
idx = vector @Double 2 [0,2]
AF.lookup  m idx 1

leads to the error

"... Couldn't match type ‘Double’ with ‘Complex Double’..."

The following

m = matrix @(Complex Double) (5,3) [[1 :+ 1,0,9.8,7.999,65,21],[0.9,6.4,2.2,1.2,2.3],[0,0,8.3,3.2,4.3]]
idz = vector @(Complex Double) 2 [0,2]
AF.lookup  m idz 1

leads to

*** Exception: AFException {afExceptionType = ArgError, afExceptionCode = 202, afExceptionMsg = "Invalid input argument"}

In any case, the index array has the wrong type, it should be acceptable only as

array @Int 

but it isn't.

[MarkJoe]

Just for info: In the python bindings for ArrayFire, things work as they should in regard to lookup, the index array there needs to consist of integers.

[dmjio]

#63