Floating-point error diagnostics : float « Data Type « Java

Floating-point error diagnostics

Java Programming for Engineers
Julio Sanchez
Maria P. Canton

ISBN: 0849308100
Publisher: CRC Press

// Java for Engineers
//Filename: FpError
//Reference: Chapter 24
//         Floating-pioint error diagnostics
//         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");
      System.out.println("Square root = " + res);


Related examples in the same category

1.Float class creates primitives that wrap themselves around data items of the float data type
2.convert Fahrenheit to Celsius back and forth with float
3.Floating-point comparisonsFloating-point comparisons
4.Float Double Time Float Double Time
5.Floating pioint comparisons
6.Min and Max values of data type float
7.Java float is 32 bit single precision type and used when fractional precision calculation is required.
8.Use toString method of Float class to convert Float into String.
9.Use Float constructor to convert float primitive type to a Float object.
10.Convert Java Float to Numeric Primitive Data Types
11.Convert Java String to Float Object
12.Java Float Comparison
13.Java Float isInfinite Method
14.Java Float isNaN Method
15.Java Float Wrapper Class
16.Compare Two Java float Arrays
17.Convert from float to String
18.Convert from String to float
19.Pass floats as string literals to a method
20.Converting a String to a float type Number
21.Check if a string is a valid number
22.Floating­Point Types
23.Float compare to Float compare to
24.Returns the sign for float value x
25.Gets the maximum of three float values.
26.Gets the minimum of three float values.
27.Compares two floats for order.
28.Clones a two dimensional array of floats.
29.Compare two float values with Float.floatToIntBits
30.Class for float-point calculations in J2ME applications CLDC