comp_complement computes a probability's complement;
is_complement verifies probability complements;
comp_prob computes current probability information;
prob contains current probability information;
is_prob verifies probabilities.
Other functions computing probabilities: comp_FDR,
comp_FOR, comp_NPV,
comp_PPV, comp_accu_freq,
comp_accu_prob, comp_acc,
comp_comp_pair,
comp_complement,
comp_complete_prob_set,
comp_err, comp_fart,
comp_mirt, comp_ppod,
comp_prob_freq, comp_prob,
comp_spec