import ddn.num.fixed_decimal: FixedDecimal;
var price = FixedDecimal!long.fromString("19.99");
assert(price.isFixedDecimal);
var d = 1.5;
assert(!d.isFixedDecimal); // binary floats are not decimalsvar.isFixedDecimal
bool isFixedDecimal() @property const nothrow @nogc pure @safeTrue when this value is a fixed-point decimal (FIXED_DECIMAL).