Looks like it's not ready for serious use yet but the initial implementation is here https://github.com/numpy/numpy-user-dtypes/tree/main/quaddtype https://gith

Looks like it's not ready for serious use yet but the initial implementation is here https://github.com/numpy/numpy-user-dtypes/tree/main/quaddtype https://github.com/numpy/numpy-user-dtypes/tree/main/quaddty... . I was just complaining about long double on Windows working on an algorithm that can benefit from higher precision, this post is serendipitous.