bool centered)
{
size_t i;
- struct covariance *cov = xzalloc (sizeof *cov);
+ struct covariance *cov = XZALLOC (struct covariance);
cov->centered = centered;
cov->passes = 1;
const union value *val = case_data (c, var);
- return var_is_value_missing (var, val, cov->exclude);
+ return (var_is_value_missing (var, val) & cov->exclude) != 0;
}