Is there a NumPy C API function which will reset the layout flags?

Question

I am manually modifying the shape and strides of NumPy arrays which may (or may not) invalidate the contiguity flags.

1. Do I have to then manually check whether the strides match the values you would expect from the shape and NPY_C_CONTIGUOUS (or NPY_F_CONTIGUOUS)?
2. Is there an API function which will do this for me and automatically clear or enable flags as is appropriate?

Answer 1

I haven't tried these myself so I am not entirely clear on their use but you may try to employ:

1. PyArray_CLEARFLAGS
2. PyArray_ENABLEFLAGS

Found in the Numpy v1.7 Array API