This week's book giveaway is in the OO, Patterns, UML and Refactoring forum.We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line!See this thread for details.
Big Moose Saloon
 Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies Register / Login Win a copy of Refactoring for Software Design Smells: Managing Technical Debt this week in the OO, Patterns, UML and Refactoring forum!

# Majji #Q.28

Punitha krishna
Greenhorn

Joined: Nov 22, 2000
Posts: 16
1: public void check()
2: {
3: System.out.println(Math.min(-0.0,+0.0));
4: System.out.println(Math.max(-0.0,+0.0));
5: System.out.println(Math.min(-0.0,+0.0) == Math.max(0.0,+0.0));
6: }

A) prints -0.0, +0.0 and false.
B) prints -0.0, +0.0 and true.
C) prints 0.0, 0.0 and false.
D) prints 0.0, 0.0 and true.
How come System.out.println(Math.min(-0.0,+0.0) == Math.max(0.0,+0.0)) is true. I thought it is false because Math.min(-0.0,+0.0) is -0.0 and Math.max(0.0,+0.0)) is 0.0.
Anbooo Sanygao
Ranch Hand

Joined: Oct 04, 2000
Posts: 45
hope the following Notes from JLS makes it clear
http://java.sun.com/docs/books/jls/html/4.doc.html#95845
4.2.3 Floating-Point Types and Values

Positive zero and negative zero compare equal; thus the result of the expression 0.0==-0.0 is true and the result of 0.0>-0.0 is false. But other operations can distinguish positive and negative zero; for example, 1.0/0.0 has the value positive infinity, while the value of 1.0/-0.0 is negative infinity. The operations Math.min and Math.max also distinguish positive zero and negative zero.

I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com

subject: Majji #Q.28