struct np *np = UP_CAST (s, struct np, parent.parent);
double rank = np->prev_cc + (c + 1) / 2.0;
- double ns = gsl_cdf_ugaussian_Pinv (rank / ( np->n + 1 ));
+ double ns = gsl_cdf_ugaussian_Pinv (rank / (np->n + 1));
double z = (y - np->mean) / np->stddev;