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Conversion of np int64 and float64 to SWIG int and float
Faiss does not transparently convert numpy int64 and float64 / float32 to SWIG's int and float
import faiss
import numpy as np
a = np.array([4, 6])
d = a[0]
faiss.IndexFlatL2(d) # fails
faiss.IndexFlatL2(int(d)) # works
It should be possible to fix it with SWIG typemaps
