title: How to detect floating point underflow in C
body: <p>I need help and sample code on how to detect floating point underflow in standard way with out using third party libraries and exceptions for both signed and unsigned. I googled and found that various authors are talking about "gradual underflow counts as underflow or not" ? Can any one explain me what gradual underflow? I need to check both scenarios </p>
  
  <p>Thanks for your time and help</p>