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Diffstat (limited to 'docs/examples/tutorial/parallelization/norm.pyx')
| -rw-r--r-- | docs/examples/tutorial/parallelization/norm.pyx | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/examples/tutorial/parallelization/norm.pyx b/docs/examples/tutorial/parallelization/norm.pyx new file mode 100644 index 000000000..5a702f975 --- /dev/null +++ b/docs/examples/tutorial/parallelization/norm.pyx @@ -0,0 +1,12 @@ +from cython.parallel cimport prange +cimport cython +from libc.math cimport sqrt + +@cython.boundscheck(False) +@cython.wraparound(False) +def l2norm(double[:] x): + cdef double total = 0 + cdef Py_ssize_t i + for i in prange(x.shape[0], nogil=True): + total += x[i]*x[i] + return sqrt(total) |