prop_number_unsigned
if (prop_number_unsigned(pn)) {
if (prop_number_unsigned((prop_number_t)value))
if (prop_number_unsigned(pn)) {
if (prop_number_unsigned(num) == false && \
if (prop_number_unsigned(num) && \
if (prop_number_unsigned(num) && \
if (prop_number_unsigned(num) == false && \
bool prop_number_unsigned(prop_number_t);