static const bool has_denorm_loss = false;
The member stores true for a type that determines whether a value has lost accuracy because it is delivered as a denormalized result (too small to represent as a normalized value) or because it is inexact (not the same as a result not subject to limitations of exponent range and precision). The latter is an option with IEC 559 floating-point representations that can affect some results.
See the related numeric_limits sample program.