Cython Program With Numpy Arrays Does Not Allow Vectorized Inputs (only Accepts Length 1 Arrays), How To Fix?

FIXED: see updated code below. This is my first Cython attempt and have a working build but it doesn't allow numpy array (vectors) as inputs, which is my real purpose here. It is

Solution 1:

There were two issues here:

1. TypeError: CyBlack() takes exactly 7 positional arguments (14 given)

   This was caused by the fact that you were unpacking your input arrays using the * ("splat") operator. You needed to pass them in as 7 separate arguments instead.

2. ValueError: Buffer dtype mismatch, expected 'float64_t' but got 'long long':

   This error was telling you that one of the input arrays had a C type of long long (which is a 64 bit integer), rather than float64_tas specified in your input type declarations. You needed to cast all of your input arrays to np.float64.