List of usage examples for java.math RoundingMode FLOOR
RoundingMode FLOOR
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From source file:NumberFormatRounding.java
public static void main(String[] args) { NumberFormat nf = NumberFormat.getNumberInstance(); nf.setMaximumFractionDigits(2);// w ww . j a va2s . c om nf.setRoundingMode(RoundingMode.FLOOR); System.out.println("Default rounding mode: " + nf.getRoundingMode()); System.out.println("123.454 rounds to " + nf.format(123.454)); System.out.println("123.455 rounds to " + nf.format(123.455)); System.out.println("123.456 rounds to " + nf.format(123.456)); System.out.println(); }
From source file:Main.java
public static void main(String[] args) { BigDecimal bg1 = new BigDecimal("123.12678"); // set scale of bg1 to 2 in bg2 using floor as rounding mode BigDecimal bg2 = bg1.setScale(2, RoundingMode.FLOOR); String str = bg1 + " after changing the scale to 2 and rounding is " + bg2; // print bg2 value System.out.println(str);//from w w w .ja va 2s . com }
From source file:NumberFormatRounding.java
public static void main(String[] args) { NumberFormat nf = NumberFormat.getNumberInstance(); nf.setMaximumFractionDigits(2);//ww w. ja v a2 s .co m nf.setRoundingMode(RoundingMode.HALF_DOWN); System.out.println("Default rounding mode: " + nf.getRoundingMode()); System.out.println("123.454 rounds to " + nf.format(123.454)); System.out.println("123.455 rounds to " + nf.format(123.455)); System.out.println("123.456 rounds to " + nf.format(123.456)); System.out.println(); nf.setRoundingMode(RoundingMode.FLOOR); System.out.println("Default rounding mode: " + nf.getRoundingMode()); System.out.println("123.454 rounds to " + nf.format(123.454)); System.out.println("123.455 rounds to " + nf.format(123.455)); System.out.println("123.456 rounds to " + nf.format(123.456)); System.out.println(); nf.setMaximumFractionDigits(2); nf.setRoundingMode(RoundingMode.CEILING); System.out.println("Default rounding mode: " + nf.getRoundingMode()); System.out.println("123.454 rounds to " + nf.format(123.454)); System.out.println("123.455 rounds to " + nf.format(123.455)); System.out.println("123.456 rounds to " + nf.format(123.456)); System.out.println(); }
From source file:Main.java
/** * Rounds a double down via passed in amount and places * @param value//from w w w. j a va 2 s. co m * @param places * @return */ public static double roundDown(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = new BigDecimal(value); bd = bd.setScale(places, RoundingMode.FLOOR); return bd.doubleValue(); }
From source file:Main.java
public static String kgToLBoz(float paramFloat) { float f1 = (32768.0F + 23117.0F * paramFloat) / 65536.0F; int i = (int) (f1 * 0.1F) / 16; float f2 = f1 * 0.1F % 16.0F; DecimalFormat localDecimalFormat = new DecimalFormat(); localDecimalFormat.setMaximumFractionDigits(1); localDecimalFormat.setGroupingSize(0); localDecimalFormat.setRoundingMode(RoundingMode.FLOOR); return i + ":" + localDecimalFormat.format(f2); }
From source file:Main.java
public static String kgToLB_ForBodyScale(float paramFloat) { int i = (int) Math.floor(1.0F + (32768.0F + 144479.0F * (paramFloat * 10.0F)) / 65536.0F); if (i % 2 != 0) { i--;//from w w w.j a va2 s.c om } DecimalFormat localDecimalFormat = new DecimalFormat(); localDecimalFormat.setMaximumFractionDigits(1); localDecimalFormat.setGroupingSize(0); localDecimalFormat.setRoundingMode(RoundingMode.FLOOR); return localDecimalFormat.format(0.1D * i); }
From source file:Main.java
/** * NOTE: Arithmetic operations in primitive types may lead to arithmetic overflow. To retain * precision, BigDecimal objects are used. * * @param rgb//from ww w .ja va 2s . c om * @return */ public static int[] convertRGB_8_8_8_To_HSB_32_32_32(int[] rgb) { int[] hsb = new int[3]; int maxChroma = Math.max(Math.max(rgb[0], rgb[1]), rgb[2]); int minChroma = Math.min(Math.min(rgb[0], rgb[1]), rgb[2]); int diff = maxChroma - minChroma; // Hue BigDecimal hue; if (diff == 0) { hue = BigDecimal.ZERO; } else if (maxChroma == rgb[0]) { float tmp = (rgb[1] - rgb[2]) / (float) diff; if (tmp < 0) { tmp += 6 * Math.ceil(-tmp / 6.0); } else { tmp -= 6 * Math.floor(tmp / 6.0); } hue = BigDecimal.valueOf(tmp); } else if (maxChroma == rgb[1]) { hue = BigDecimal.valueOf((rgb[2] - rgb[0]) / (float) diff + 2); } else { hue = BigDecimal.valueOf((rgb[0] - rgb[1]) / (float) diff + 4); } // [0, 360] -> [0, 0xffffffff] hue = hue.multiply(BigDecimal.valueOf(0xffffffffL)); hue = hue.divide(BigDecimal.valueOf(6), RoundingMode.FLOOR); hsb[0] = ByteBuffer.allocate(8).putLong(hue.longValue()).getInt(4); // Saturation if (maxChroma == 0) { hsb[1] = 0; } else { // [0, 1] -> [0, 0xffffffff] BigDecimal sat = BigDecimal.valueOf(diff); sat = sat.multiply(BigDecimal.valueOf(0xffffffffL)); sat = sat.divide(BigDecimal.valueOf(maxChroma), RoundingMode.FLOOR); hsb[1] = ByteBuffer.allocate(8).putLong(sat.longValue()).getInt(4); } // Brightness // [0, 255] -> [0, 0xffffffff] BigDecimal brightness = BigDecimal.valueOf(maxChroma); brightness = brightness.multiply(BigDecimal.valueOf(0xffffffffL)); brightness = brightness.divide(BigDecimal.valueOf(0xffL), RoundingMode.FLOOR); hsb[2] = ByteBuffer.allocate(8).putLong(brightness.longValue()).getInt(4); return hsb; }
From source file:com.github.rinde.rinsim.scenario.ScenarioTestUtil.java
public static Scenario create(long seed) { final int endTime = 3 * 60 * 60 * 1000; Scenario.Builder b = Scenario.builder() .addModel(PlaneRoadModel.supplier(new Point(0, 0), new Point(10, 10), SI.KILOMETER, Measure.valueOf(50d, NonSI.KILOMETERS_PER_HOUR))) .addModel(DefaultPDPModel.supplier(TimeWindowPolicies.LIBERAL)).addEvents(Collections.nCopies(10, new AddVehicleEvent(-1, VehicleDTO.builder().startPosition(new Point(5, 5)).build()))); RandomGenerator rng = new MersenneTwister(seed); for (int i = 0; i < 20; i++) { long announceTime = rng.nextInt(DoubleMath.roundToInt(endTime * .8, RoundingMode.FLOOR)); b.addEvent(new AddParcelEvent(ParcelDTO .builder(new Point(rng.nextDouble() * 10, rng.nextDouble() * 10), new Point(rng.nextDouble() * 10, rng.nextDouble() * 10)) .orderAnnounceTime(announceTime).pickupTimeWindow(new TimeWindow(announceTime, endTime)) .deliveryTimeWindow(new TimeWindow(announceTime, endTime)).neededCapacity(0).build())); }/* ww w .ja v a 2 s . co m*/ b.addEvent(new TimedEvent(PDPScenarioEvent.TIME_OUT, endTime)).scenarioLength(endTime) .stopCondition(new EndTimeStopCondition(endTime)); b.addEventType(PDPScenarioEvent.ADD_DEPOT); return b.build(); }
From source file:carrental.beans.billing.BillingBean.java
/** * @param servicePrice The standardized servicePrice is used as the mean for the randomized cost-calculation *///from ww w . ja v a 2 s.co m private static BigDecimal simulateRepairCosts(double servicePrice) { Random randomGenerator = new Random(); Double r = randomGenerator.nextGaussian() * 90 + servicePrice; //z*SD + mu return new BigDecimal(r).setScale(2, RoundingMode.FLOOR); }
From source file:com.github.rinde.rinsim.pdptw.common.ScenarioTestUtil.java
/** * Creates a random scenario.//from ww w. j ava 2 s . c om * @param seed The seed to use. * @param models Additional models (optional). * @return A new random scenario. */ public static Scenario createRandomScenario(long seed, ModelBuilder<?, ?>... models) { final int endTime = 3 * 60 * 60 * 1000; final Scenario.Builder b = Scenario.builder().addModel(RoadModelBuilders.plane()) .addModel(DefaultPDPModel.builder()).addModels(asList(models)).addEvents(Collections.nCopies(10, AddVehicleEvent.create(-1, VehicleDTO.builder().startPosition(new Point(5, 5)).build()))); final RandomGenerator rng = new MersenneTwister(seed); for (int i = 0; i < 20; i++) { final long announceTime = rng.nextInt(DoubleMath.roundToInt(endTime * .8, RoundingMode.FLOOR)); b.addEvent(AddParcelEvent.create(Parcel .builder(new Point(rng.nextDouble() * 10, rng.nextDouble() * 10), new Point(rng.nextDouble() * 10, rng.nextDouble() * 10)) .orderAnnounceTime(announceTime).pickupTimeWindow(TimeWindow.create(announceTime, endTime)) .deliveryTimeWindow(TimeWindow.create(announceTime, endTime)).neededCapacity(0).buildDTO())); } b.addEvent(TimeOutEvent.create(endTime)).scenarioLength(endTime) .setStopCondition(StopConditions.limitedTime(endTime)); return b.build(); }