java.lang.Math.nextAfter()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.lang.Math.nextAfter()方法的一些代码示例，展示了Math.nextAfter()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Math.nextAfter()方法的具体详情如下：
包路径：java.lang.Math
类名称：Math
方法名：nextAfter

Math.nextAfter介绍

[英]Returns the next double after start in the given direction.
[中]返回给定方向上开始后的下一个双精度。

代码示例

代码示例来源：origin: robovm/robovm

  1. /**
  2.  * Returns the next float after {@code start} in the given {@code direction}.
  3.  * @since 1.6
  4.  */
  5. public static float nextAfter(float start, double direction) {
  6.   return Math.nextAfter(start, direction);
  7. }

代码示例来源：origin: apache/incubator-druid

  1. @Override
  2.  protected ExprEval eval(double x, double y)
  3.  {
  4.   return ExprEval.of(Math.nextAfter(x, y));
  5.  }
  6. }

代码示例来源：origin: kiegroup/optaplanner

  1. @Override
  2. public Double next() {
  3.   if (to == from) {
  4.     throw new NoSuchElementException();
  5.   }
  6.   double diff = to - from;
  7.   double next = from + diff * workingRandom.nextDouble();
  8.   if (next >= to) {
  9.     // Rounding error occurred
  10.     next = Math.nextAfter(next, Double.NEGATIVE_INFINITY);
  11.   }
  12.   return next;
  13. }

代码示例来源：origin: HdrHistogram/HdrHistogram

  1. Math.min(Math.max(Math.nextAfter(percentile, Double.NEGATIVE_INFINITY), 0.0D), 100.0D);

代码示例来源：origin: kiegroup/optaplanner

  1. @Test
  2. public void cornerCase() {
  3.   Random random = mock(Random.class);
  4.   NearbyRandom nearbyRandom = new LinearDistributionNearbyRandom(100);
  5.   when(random.nextDouble()).thenReturn(Math.nextAfter(1.0, Double.NEGATIVE_INFINITY));
  6.   assertEquals(9, nearbyRandom.nextInt(random, 10));
  7.   when(random.nextDouble()).thenReturn(Math.nextAfter(1.0, Double.NEGATIVE_INFINITY));
  8.   assertEquals(99, nearbyRandom.nextInt(random, 500));
  9. }

代码示例来源：origin: kiegroup/optaplanner

  1. @Test
  2. public void createRandomIterator() {
  3.   Random workingRandom = mock(Random.class);
  4.   when(workingRandom.nextDouble()).thenReturn(0.3, 0.0);
  5.   assertElementsOfIterator(new DoubleValueRange(0.0, 1.0).createRandomIterator(workingRandom), 0.3, 0.0);
  6.   when(workingRandom.nextDouble()).thenReturn(0.3, 0.0);
  7.   assertElementsOfIterator(new DoubleValueRange(100.0, 104.0).createRandomIterator(workingRandom), 101.2, 100.0);
  8.   when(workingRandom.nextDouble()).thenReturn(0.3, 0.0);
  9.   assertElementsOfIterator(new DoubleValueRange(-5.0, 5.0).createRandomIterator(workingRandom), -2.0, -5.0);
  10.   assertAllElementsOfIterator(new DoubleValueRange(7.0, 7.0).createRandomIterator(workingRandom));
  11.   when(workingRandom.nextDouble()).thenReturn(Math.nextAfter(1.0, Double.NEGATIVE_INFINITY));
  12.   assertElementsOfIterator(new DoubleValueRange(0.000001, 0.000002).createRandomIterator(workingRandom),
  13.       Math.nextAfter(0.000002, Double.NEGATIVE_INFINITY));
  14.   when(workingRandom.nextDouble()).thenReturn(Math.nextAfter(1.0, Double.NEGATIVE_INFINITY));
  15.   assertElementsOfIterator(new DoubleValueRange(1000000.0, 2000000.0).createRandomIterator(workingRandom),
  16.       Math.nextAfter(2000000.0, Double.NEGATIVE_INFINITY));
  17. }

代码示例来源：origin: kiegroup/optaplanner

  1. @Test
  2. public void cornerCase() {
  3.   Random random = mock(Random.class);
  4.   NearbyRandom nearbyRandom = new ParabolicDistributionNearbyRandom(100);
  5.   when(random.nextDouble()).thenReturn(Math.nextAfter(1.0, Double.NEGATIVE_INFINITY));
  6.   assertEquals(99, nearbyRandom.nextInt(random, 500));
  7.   assertEquals(9, nearbyRandom.nextInt(random, 10));
  8.   when(random.nextDouble()).thenReturn(0.0);
  9.   assertEquals(0, nearbyRandom.nextInt(random, 500));
  10.   assertEquals(0, nearbyRandom.nextInt(random, 10));
  11. }

代码示例来源：origin: kiegroup/optaplanner

  1. when(random.nextDouble()).thenReturn(Math.nextAfter(threshold, Double.NEGATIVE_INFINITY));
  2. assertEquals(-1, nearbyRandom.nextInt(random, 1));

代码示例来源：origin: shchurov/HorizontalWheelView

  1. private boolean checkEndLock(double radians) {
  2.   if (!endLock) {
  3.     return false;
  4.   }
  5.   boolean hit = false;
  6.   if (radians >= 2 * PI) {
  7.     angle = Math.nextAfter(2 * PI, Double.NEGATIVE_INFINITY);
  8.     hit = true;
  9.   } else if (onlyPositiveValues && radians < 0) {
  10.     angle = 0;
  11.     hit = true;
  12.   } else if (radians <= -2 * PI) {
  13.     angle = Math.nextAfter(-2 * PI, Double.POSITIVE_INFINITY);
  14.     hit = true;
  15.   }
  16.   if (hit) {
  17.     touchHandler.cancelFling();
  18.   }
  19.   return hit;
  20. }

代码示例来源：origin: mapsforge/mapsforge

  1. @Test
  2. public void validateLatitudeTest() {
  3.   LatLongUtils.validateLatitude(LatLongUtils.LATITUDE_MAX);
  4.   LatLongUtils.validateLatitude(LatLongUtils.LATITUDE_MIN);
  5.   verifyInvalidLatitude(Double.NaN);
  6.   verifyInvalidLatitude(Math.nextAfter(LatLongUtils.LATITUDE_MAX, Double.POSITIVE_INFINITY));
  7.   verifyInvalidLatitude(Math.nextAfter(LatLongUtils.LATITUDE_MIN, Double.NEGATIVE_INFINITY));
  8. }

代码示例来源：origin: mapsforge/mapsforge

  1. @Test
  2. public void validateLongitudeTest() {
  3.   LatLongUtils.validateLongitude(LatLongUtils.LONGITUDE_MAX);
  4.   LatLongUtils.validateLongitude(LatLongUtils.LONGITUDE_MIN);
  5.   verifyInvalidLongitude(Double.NaN);
  6.   verifyInvalidLongitude(Math.nextAfter(LatLongUtils.LONGITUDE_MAX, Double.POSITIVE_INFINITY));
  7.   verifyInvalidLongitude(Math.nextAfter(LatLongUtils.LONGITUDE_MIN, Double.NEGATIVE_INFINITY));
  8. }

代码示例来源：origin: com.mobidevelop.robovm/robovm-rt

  1. /**
  2.  * Returns the next float after {@code start} in the given {@code direction}.
  3.  * @since 1.6
  4.  */
  5. public static float nextAfter(float start, double direction) {
  6.   return Math.nextAfter(start, direction);
  7. }

代码示例来源：origin: MobiVM/robovm

  1. /**
  2.  * Returns the next float after {@code start} in the given {@code direction}.
  3.  * @since 1.6
  4.  */
  5. public static float nextAfter(float start, double direction) {
  6.   return Math.nextAfter(start, direction);
  7. }

代码示例来源：origin: stackoverflow.com

  1. import java.math.BigDecimal;
  3. public class Test
  4. {
  5.  public static void main(String[] args) {
  6.   double maxValue = (double)Long.MAX_VALUE;
  7.   System.out.println(new BigDecimal(maxValue));
  8.   double nextDown = Math.nextAfter(maxValue, 0);
  9.   System.out.println(new BigDecimal(nextDown));
  10.   System.out.println(maxValue-nextDown);
  11.  }
  12. }

代码示例来源：origin: com.carrotsearch.randomizedtesting/randomizedtesting-runner

  1. /**
  2.  * Fuzzify the input value by decreasing it by a few ulps, but never past min. 
  3.  */
  4. public static double fuzzDown(Random r, double v, double min) {
  5.  assert v >= min;
  6.  for (int steps = RandomNumbers.randomIntBetween(r, 1, 10); steps > 0 && v > min; steps--) {
  7.   v = Math.nextAfter(v, Double.NEGATIVE_INFINITY);
  8.  }
  9.  return v;
  10. }

代码示例来源：origin: com.carrotsearch.randomizedtesting/randomizedtesting-runner

  1. /**
  2.  * Fuzzify the input value by decreasing it by a few ulps, but never past min. 
  3.  */
  4. public static float fuzzDown(Random r, float v, float min) {
  5.  assert v >= min;
  6.  for (int steps = RandomNumbers.randomIntBetween(r, 1, 10); steps > 0 && v > min; steps--) {
  7.   v = Math.nextAfter(v, Double.NEGATIVE_INFINITY);
  8.  }
  9.  return v;
  10. }

代码示例来源：origin: org.apache.druid/druid-common

  1. @Override
  2.  protected ExprEval eval(double x, double y)
  3.  {
  4.   return ExprEval.of(Math.nextAfter(x, y));
  5.  }
  6. }

代码示例来源：origin: org.ballerinalang/ballerina-math

  1. public void execute(Context ctx) {
  2.     double a = ctx.getFloatArgument(0);
  3.     double b = ctx.getFloatArgument(1);
  4.     ctx.setReturnValues(new BFloat(Math.nextAfter(a, b)));
  5.   }
  6. }

代码示例来源：origin: dremio/dremio-oss

  1. private Query toRangeQuery(RangeDouble range) {
  2.  return DoublePoint.newRangeQuery(
  3.    range.getField(),
  4.    range.hasMin() ?
  5.     range.getMinInclusive() ? range.getMin()
  6.     : Math.nextUp(range.getMin())
  7.    : Double.NEGATIVE_INFINITY,
  8.    range.hasMax() ?
  9.     range.getMaxInclusive() ? range.getMax()
  10.     : Math.nextAfter(range.getMax(), -Double.MAX_VALUE)
  11.    : Double.POSITIVE_INFINITY );
  12. }

代码示例来源：origin: dremio/dremio-oss

  1. private Query toRangeQuery(RangeFloat range) {
  2.  return FloatPoint.newRangeQuery(
  3.    range.getField(),
  4.    range.hasMin() ?
  5.     range.getMinInclusive() ? range.getMin()
  6.     : Math.nextUp(range.getMin())
  7.    : Float.NEGATIVE_INFINITY,
  8.    range.hasMax() ?
  9.     range.getMaxInclusive() ? range.getMax()
  10.     : Math.nextAfter(range.getMax(), -Double.MAX_VALUE)
  11.    : Float.POSITIVE_INFINITY );
  12. }

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