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/*
Java Programming for Engineers
Julio Sanchez
Maria P. Canton
ISBN: 0849308100
Publisher: CRC Press
*/
// Java for Engineers
//Filename: FpError
//Reference: Chapter 24
//Description:
// Floating-pioint error diagnostics
//Requires:
// Keyin class in current directory
class FpError {
public static void main(String[] args) {
double res;
double divisor = 0;
double dividend, root;
// Get user input for numerator
System.out.println("Forcing division by zero error");
dividend = 10d;
res = dividend / divisor;
// Test for negative invifinity
if (res == Double.NEGATIVE_INFINITY)
System.out.println("result is NEGATIVE_INFINITY");
if (res == Double.POSITIVE_INFINITY)
System.out.println("result is POSITIVE_INFINITY");
// Test for either infinity
if (Double.isInfinite(res))
System.out.println("result is infinite");
// Get user input for square root
System.out.println("\nCalculating square root (try negative)");
root = 10d;
res = Math.sqrt(root);
if (Double.isNaN(res))
System.out.println("result is Nan");
else
System.out.println("Square root = " + res);
}
}
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