Improve Vectorisation

This MR fixes some bugs caused in the vectorisation

pystencils/alignedarray.py

 import numpy as np
-from pystencils.typing import numpy_name_to_c
 
 
 def aligned_empty(shape, byte_alignment=True, dtype=np.float64, byte_offset=0, order='C', align_inner_coordinate=True):
@@ -77,7 +76,7 @@ def aligned_empty(shape, byte_alignment=True, dtype=np.float64, byte_offset=0, o
         return tmp
 
 
-def aligned_zeros(shape, byte_alignment=True, dtype=float, byte_offset=0, order='C', align_inner_coordinate=True):
+def aligned_zeros(shape, byte_alignment=True, dtype=np.float64, byte_offset=0, order='C', align_inner_coordinate=True):
     arr = aligned_empty(shape, dtype=dtype, byte_offset=byte_offset,
                         order=order, byte_alignment=byte_alignment, align_inner_coordinate=align_inner_coordinate)
     x = np.zeros((), arr.dtype)
@@ -85,7 +84,7 @@ def aligned_zeros(shape, byte_alignment=True, dtype=float, byte_offset=0, order=
     return arr
 
 
-def aligned_ones(shape, byte_alignment=True, dtype=float, byte_offset=0, order='C', align_inner_coordinate=True):
+def aligned_ones(shape, byte_alignment=True, dtype=np.float64, byte_offset=0, order='C', align_inner_coordinate=True):
     arr = aligned_empty(shape, dtype=dtype, byte_offset=byte_offset,
                         order=order, byte_alignment=byte_alignment, align_inner_coordinate=align_inner_coordinate)
     x = np.ones((), arr.dtype)