Benchmark Test Methods for "float" Operation

JVM Tutorials - Herong's Tutorial Examples - Version 4.23, by Dr. Herong Yang

JVM Tutorials - Herong's Tutorial Examples

∟Micro Benchmark Tests on "float" and "double" Operations

∟Benchmark Test Methods for "float" Operation

This section provides a list of benchmark test methods for 'float' operations that can be called by my BenchmarkRunner.java program.

After finishing performance testing on "int" and "long" operations, I want to look at "float" and "double" operations.

Here are my test methods for "float" operations ready to be called by my BenchmarkRunner.java program:

/**
 * BenchmarkTestFloat.java
 * Copyright (c) 2010, HerongYang.com, All Rights Reserved.
 */
class BenchmarkTestFloat {

   // The empty loop benchmark test method
   public static float emptyLoop(int steps, BenchmarkRunner runner) {
      float x = 0;
      float i = 0;
      float last = steps;
      runner.startTimer();
      for (i=0; i<last; i+=1) {
      }
      runner.stopTimer();
      x = i;
      return x;
   }

   // Test method for an assignment operation in a loop
   public static float assignment(int steps, BenchmarkRunner runner) {
      float x = 0;
      float i = 0;
      float last = steps;
      runner.startTimer();
      for (i=0; i<last; i+=1) {
         x = i;
      }
      runner.stopTimer();
      return x;
   }

   // Test method for an add operation in a loop
   public static float add(int steps, BenchmarkRunner runner) {
      float x = 0;
      float i = 0;
      float last = steps;
      runner.startTimer();
      for (i=0; i<last; i+=1) {
         x = i + i;
      }
      runner.stopTimer();
      return x;
   }

   // Test method for a multiply operation in a loop
   public static float multiply(int steps, BenchmarkRunner runner) {
      float x = 0;
      float i = 0;
      float last = steps;
      runner.startTimer();
      for (i=0; i<last; i+=1) {
         x = i * 3;
      }
      runner.stopTimer();
      return x;
   }

   // Test method for a division operation in a loop
   public static float division(int steps, BenchmarkRunner runner) {
      float x = 0;
      float i = 0;
      float last = steps;
      runner.startTimer();
      for (i=0; i<last; i+=1) {
         x = i / 3;
      }
      runner.stopTimer();
      return x;
   }
}

Note that: