package benchmarks.regression;
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import java.math.BigDecimal;
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import java.text.DecimalFormat;
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import java.text.NumberFormat;
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import java.util.Locale;
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public class DecimalFormatBenchmark {
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private static final String EXP_PATTERN = "##E0";
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private static final DecimalFormat df = (DecimalFormat) DecimalFormat.getInstance();
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// Keep patternInstance for timing with patterns, to not dirty the plain instance.
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private static final DecimalFormat patternInstance = (DecimalFormat)
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DecimalFormat.getInstance();
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private static final DecimalFormat dfCurrencyUS = (DecimalFormat)
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NumberFormat.getCurrencyInstance(Locale.US);
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private static final DecimalFormat dfCurrencyFR = (DecimalFormat)
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NumberFormat.getInstance(Locale.FRANCE);
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private static final BigDecimal BD10E3 = new BigDecimal("10E3");
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private static final BigDecimal BD10E9 = new BigDecimal("10E9");
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private static final BigDecimal BD10E100 = new BigDecimal("10E100");
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private static final BigDecimal BD10E1000 = new BigDecimal("10E1000");
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private static final int WHOLE_NUMBER = 10;
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private static final double TWO_DP_NUMBER = 3.14;
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public static void formatWithGrouping(Object obj, int reps) {
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df.setGroupingSize(3);
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df.setGroupingUsed(true);
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for (int i = 0; i < reps; i++) {
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df.format(obj);
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}
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}
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public static void format(String pattern, Object obj, int reps) {
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patternInstance.applyPattern(pattern);
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for (int i = 0; i < reps; i++) {
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patternInstance.format(obj);
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}
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}
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public static void format(Object obj, int reps) {
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for (int i = 0; i < reps; i++) {
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df.format(obj);
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}
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}
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public static void formatToCharacterIterator(Object obj, int reps) {
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for (int i = 0; i < reps; i++) {
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df.formatToCharacterIterator(obj);
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}
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}
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public static void formatCurrencyUS(Object obj, int reps) {
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for (int i = 0; i < reps; i++) {
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dfCurrencyUS.format(obj);
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}
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}
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public static void formatCurrencyFR(Object obj, int reps) {
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for (int i = 0; i < reps; i++) {
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dfCurrencyFR.format(obj);
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}
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}
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public void time_formatGrouping_BigDecimal10e3(int reps) {
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formatWithGrouping(BD10E3, reps);
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}
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public void time_formatGrouping_BigDecimal10e9(int reps) {
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formatWithGrouping(BD10E9, reps);
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}
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public void time_formatGrouping_BigDecimal10e100(int reps) {
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formatWithGrouping(BD10E100, reps);
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}
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public void time_formatGrouping_BigDecimal10e1000(int reps) {
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formatWithGrouping(BD10E1000, reps);
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}
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public void time_formatBigDecimal10e3(int reps) {
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format(BD10E3, reps);
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}
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public void time_formatBigDecimal10e9(int reps) {
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format(BD10E9, reps);
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}
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public void time_formatBigDecimal10e100(int reps) {
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format(BD10E100, reps);
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}
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public void time_formatBigDecimal10e1000(int reps) {
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format(BD10E1000, reps);
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}
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public void time_formatPi(int reps) {
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format(Math.PI, reps);
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}
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public void time_formatE(int reps) {
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format(Math.E, reps);
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}
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public void time_formatUSD(int reps) {
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formatCurrencyUS(WHOLE_NUMBER, reps);
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}
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public void time_formatUsdWithCents(int reps) {
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formatCurrencyUS(TWO_DP_NUMBER, reps);
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}
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public void time_formatEur(int reps) {
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formatCurrencyFR(WHOLE_NUMBER, reps);
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}
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public void time_formatEurWithCents(int reps) {
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formatCurrencyFR(TWO_DP_NUMBER, reps);
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}
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public void time_formatAsExponent10e3(int reps) {
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format(EXP_PATTERN, BD10E3, reps);
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}
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public void time_formatAsExponent10e9(int reps) {
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format(EXP_PATTERN, BD10E9, reps);
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}
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public void time_formatAsExponent10e100(int reps) {
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format(EXP_PATTERN, BD10E100, reps);
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}
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public void time_formatAsExponent10e1000(int reps) {
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format(EXP_PATTERN, BD10E1000, reps);
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}
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public void time_formatToCharacterIterator10e3(int reps) {
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formatToCharacterIterator(BD10E3, reps);
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}
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public void time_formatToCharacterIterator10e9(int reps) {
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formatToCharacterIterator(BD10E9, reps);
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}
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public void time_formatToCharacterIterator10e100(int reps) {
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formatToCharacterIterator(BD10E100, reps);
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}
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public void time_formatToCharacterIterator10e1000(int reps) {
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formatToCharacterIterator(BD10E1000, reps);
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}
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public void time_instantiation(int reps) {
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for (int i = 0; i < reps; i++) {
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new DecimalFormat();
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}
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}
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}
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