DoubleVsBigDecimalBenchmark

gistfile1.java

public class DoubleVsBigDecimalBenchmark extends SimpleBenchmark {
    @Param({"1", "1.01", "1.0123456789", "20", "20.01", "20.0123456789", "1000000000", "1000000000.01", "1000000000.0123456789"})
    private double value;

    private BigDecimal[] bigDecimalVal = new BigDecimal[1];
    private double[] doubleVal = new double[1];

    @Override
    protected void setUp() throws Exception {
        bigDecimalVal[0] = BigDecimal.valueOf(value);
        doubleVal[0] = value;
    }


    public void timeDouble(int reps) {
        double dummy = 0;
        for (int i = 0; i < reps; i++) {
            int v = i / (reps + 1);
            dummy = doubleVal[v] * doubleVal[v];
        }
        doubleVal[0] = dummy;
    }

    public void timeBigDecimal(int reps) {
        BigDecimal dummy = BigDecimal.ZERO;
        for (int i = 0; i < reps; i++) {
            int v = i / (reps + 1);
            dummy = bigDecimalVal[v].multiply(bigDecimalVal[v]);
        }
        bigDecimalVal[0] = dummy;
    }

    public static void main(String[] args) {
        Runner.main(DoubleVsBigDecimalBenchmark.class, new String[]{});
    }

}