cd_icc_utils_get_coverage ()

gboolean
cd_icc_utils_get_coverage (CdIcc *icc,
                           CdIcc *icc_reference,
                           gdouble *coverage,
                           GError **error);

Gets the gamut coverage of two profiles where 0.5 would mean the gamut is half the size, and 2.0 would indicate the gamut is twice the size.