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| -rw-r--r-- | numpy/random/_common.pyx | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/numpy/random/_common.pyx b/numpy/random/_common.pyx index ad43f2812..4c34c503c 100644 --- a/numpy/random/_common.pyx +++ b/numpy/random/_common.pyx @@ -171,8 +171,23 @@ cdef object prepare_ctypes(bitgen_t *bitgen): return _ctypes cdef double kahan_sum(double *darr, np.npy_intp n): + """ + Parameters + ---------- + darr : reference to double array + Address of values to sum + n : intp + Length of d + + Returns + ------- + float + The sum. 0.0 if n <= 0. + """ cdef double c, y, t, sum cdef np.npy_intp i + if n <= 0: + return 0.0 sum = darr[0] c = 0.0 for i in range(1, n): |