diff options
Diffstat (limited to 'src/vppinfra/random.c')
| -rw-r--r-- | src/vppinfra/random.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/vppinfra/random.c b/src/vppinfra/random.c index e54a3bc8c7c..ea89f0a1618 100644 --- a/src/vppinfra/random.c +++ b/src/vppinfra/random.c @@ -63,20 +63,26 @@ u32 standalone_random_default_seed = 1; f64 clib_chisquare (u64 * values) { - int i; + u32 i, len; f64 d, delta_d, actual_frequency, expected_frequency; u64 n_observations = 0; - ASSERT (vec_len (values)); + len = vec_len (values); + /* + * Shut up coverity. Return a huge number which should always exceed + * the X2 critical value. + */ + if (len == 0) + return (f64) 1e70; - for (i = 0; i < vec_len (values); i++) + for (i = 0; i < len; i++) n_observations += values[i]; - expected_frequency = (1.0 / (f64) vec_len (values)) * (f64) n_observations; + expected_frequency = (1.0 / (f64) len) * (f64) n_observations; d = 0.0; - for (i = 0; i < vec_len (values); i++) + for (i = 0; i < len; i++) { actual_frequency = ((f64) values[i]); delta_d = ((actual_frequency - expected_frequency) |