code-example/src/cython.js

Language code example.

const code = `
import numpy as np
cimport cython
from libc.math cimport sqrt

@cython.boundscheck(False)
@cython.wraparound(False)
def pairwise_cython(double[:, ::1] X):
    cdef int M = X.shape[0]
    cdef int N = X.shape[1]
    cdef double tmp, d
    cdef double[:, ::1] D = np.empty((M, M), dtype=np.float64)
    for i in range(M):
        for j in range(M):
            d = 0.0
            for k in range(N):
                tmp = X[i, k] - X[j, k]
                d += tmp * tmp
            D[i, j] = sqrt(d)
    return np.asarray(D)
`;

export default code;