DOC add comment in check_pca_float_dtype_preservation
Documenting the changes in
@@ -532,6 +532,9 @@ def check_pca_float_dtype_preservation(svd_solver):
assert pca_64.transform(X_64).dtype == np.float64
assert pca_32.transform(X_32).dtype == np.float32
+ # the rtol is set such that the test passes on all platforms tested on
+ # conda-forge: PR#15775
+ # see: https://github.com/conda-forge/scikit-learn-feedstock/pull/113
assert_allclose(pca_64.components_, pca_32.components_, rtol=2e-4)
