Function PyArray_CopyInto

numpy/core/src/multiarray/ctors.c:2772–2776

NUMPY_API * Copy an Array into another array. * Broadcast to the destination shape if necessary. * * Returns 0 on success, -1 on failure. */

 * Returns 0 on success, -1 on failure.
 */
NPY_NO_EXPORT int
PyArray_CopyInto(PyArrayObject *dst, PyArrayObject *src)
{
    return PyArray_AssignArray(dst, src, NULL, NPY_UNSAFE_CASTING);
}

/*NUMPY_API
 * Move the memory of one array into another, allowing for overlapping data.