Add cnp.import_array for numpy>=2

.github/workflows/python.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Install build packages and pytest
         run: |
           python -m pip install --upgrade pip wheel setuptools
-          python -m pip install "conan<2" scikit-build pytest cython numpy
+          python -m pip install "conan<2" scikit-build pytest cython numpy>=2
 
       - name: Create sdist
         run: python setup.py sdist

src/pyssht/cpyssht.pyx

@@ -5,6 +5,9 @@ import numpy as np
 cimport numpy as np
 cimport cython
 
+# required if using any part of the numpy PyArray_* API
+np.import_array()
+
 from libc.math cimport log, exp, sqrt, atan2, cos, sin, asin, atan, tan
 from scipy.special import factorial
 from scipy.interpolate import interp2d

src/pyssht/ducc_interface.pyx

@@ -1,6 +1,9 @@
 import numpy as np
 cimport numpy as np
 
+# required if using any part of the numpy PyArray_* API
+np.import_array()
+
 cdef import_ducc0():
     import ducc0
     major, minor, patch = ducc0.__version__.split('.')