fix(cython): replace fallback import for INFINITY import in _fastdtw.pyx #66
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- Removed faulty fallback `from numpy.math cimport INFINITY` - Replaced with `from libc.math cimport INFINITY`, which resolves build errors - Fixes Cython compilation and enables proper FastDTW C extension usage
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This PR resolves a build error that occurs when compiling FastDTW from source.
The Cython file
_fastdtw.pyxcontains a fallbackcimportfromnumpy.math, which does not exist and breaks the build process.from libc.math cimport INFINITYThis removes the broken fallback and ensures proper compilation of the C extension.
Without this fix, the build fails and FastDTW falls back to the pure Python implementation, which is up to 50× slower.
With the fix, the compiled
.soextension is correctly built and used, unlocking FastDTW's intended performance.NumPy seemingly removed
numpy.math.pxdin version 2.0.0 as noted in their changelog:https://github.com/numpy/numpy/blob/main/doc/changelog/2.0.0-changelog.rst
Related Issue
Closes #65
Let me know if any changes are needed — happy to adjust.