This week's book giveaway is in the OCMJEA forum.
We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line!
See this thread for details.
The moose likes Java in General and the fly likes Hexadecimal floating-point literals Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of OCM Java EE 6 Enterprise Architect Exam Guide this week in the OCMJEA forum!
JavaRanch » Java Forums » Java » Java in General
Bookmark "Hexadecimal floating-point literals" Watch "Hexadecimal floating-point literals" New topic

Hexadecimal floating-point literals

Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14116

I've been programming in Java for more than 10 years, so I thought I knew the language inside out, but I just discovered a new, obscure feature: you can write floating-point constants in hexadecimal.

You can for example write: 0x50.1p3 which is equal to 640.5.

Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 7 API documentation
Scala Notes - My blog about Scala
Campbell Ritchie

Joined: Oct 13, 2005
Posts: 38509
I never knew that, but it's in the Java™ Language Specification that you can use p/P as an exponent indicator.
David Newton

Joined: Sep 29, 2008
Posts: 12617

Yeah, I never actually understood this one... I suppose some day it could come in handy?
subject: Hexadecimal floating-point literals