Example usage for java.lang Float POSITIVE_INFINITY

Introduction

In this page you can find the example usage for java.lang Float POSITIVE_INFINITY.

Prototype

float POSITIVE_INFINITY

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Document

A constant holding the positive infinity of type float .

Usage

From source file:Main.java

/**
 * Fills the array with random floats.  Values will be between min (inclusive) and
 * max (inclusive)./* ww w . j  av  a2 s.  c om*/
 */
public static void genRandomFloats(long seed, float min, float max, float array[], boolean includeExtremes) {
    Random r = new Random(seed);
    int minExponent = Math.min(Math.getExponent(min), 0);
    int maxExponent = Math.max(Math.getExponent(max), 0);
    if (minExponent < -6 || maxExponent > 6) {
        // Use an exponential distribution
        int exponentDiff = maxExponent - minExponent;
        for (int i = 0; i < array.length; i++) {
            float mantissa = r.nextFloat();
            int exponent = minExponent + r.nextInt(maxExponent - minExponent);
            int sign = (min >= 0) ? 1 : 1 - r.nextInt(2) * 2; // -1 or 1
            float rand = sign * mantissa * (float) Math.pow(2.0, exponent);
            if (rand < min || rand > max) {
                continue;
            }
            array[i] = rand;
        }
    } else {
        // Use a linear distribution
        for (int i = 0; i < array.length; i++) {
            float rand = r.nextFloat();
            array[i] = min + rand * (max - min);
        }
    }
    // Seed a few special numbers we want to be sure to test.
    for (int i = 0; i < sInterestingDoubles.length; i++) {
        float f = (float) sInterestingDoubles[i];
        if (min <= f && f <= max) {
            array[r.nextInt(array.length)] = f;
        }
    }
    array[r.nextInt(array.length)] = min;
    array[r.nextInt(array.length)] = max;
    if (includeExtremes) {
        array[r.nextInt(array.length)] = Float.NaN;
        array[r.nextInt(array.length)] = Float.POSITIVE_INFINITY;
        array[r.nextInt(array.length)] = Float.NEGATIVE_INFINITY;
        array[r.nextInt(array.length)] = Float.MIN_VALUE;
        array[r.nextInt(array.length)] = Float.MIN_NORMAL;
        array[r.nextInt(array.length)] = Float.MAX_VALUE;
        array[r.nextInt(array.length)] = -Float.MIN_VALUE;
        array[r.nextInt(array.length)] = -Float.MIN_NORMAL;
        array[r.nextInt(array.length)] = -Float.MAX_VALUE;
    }
}

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From source file:test.uk.co.modularaudio.util.math.Float16Tester.java

@Test
public void testFromFloat() {
    final float[] testFloats = new float[] { Float16.MAX_VALUE, Float16.MIN_VALUE,

            // Interesting values from an audio perspective
            -1.0f, -0.001f, -0.0001f, 0.0f, 0.0001f, 0.001f, 1.0f, -1.1f, -0.9f, 0.9f, 1.1f,

            // Some "steady" values
            0.1f, 0.125f, 0.2f, 0.25f, 0.3f, 0.4f, 0.5f, 0.6f, 0.7f, 0.75f, 0.8f, 0.825f,

            // And some values to examine precision
            192000.0f, 41000.0f, 22050.0f, Float.NaN, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY, };

    for (final float testFloat : testFloats) {
        final Float16 f16 = new Float16(testFloat);

        final float andBack = f16.asFloat();

        log.debug("OF(" + MathFormatter.slowFloatPrint(testFloat, 16, true) + ") F16("
                + MathFormatter.slowFloatPrint(andBack, 16, true) + ")");
    }// w  w  w .  j  a  v  a 2 s .  c o m
}

---

From source file:Main.java

public static Point findBestPreviewSizeValue(Camera.Parameters parameters, Point screenResolution) {

    List<Camera.Size> supportedPreviewSizes = new ArrayList<Camera.Size>(parameters.getSupportedPreviewSizes());

    Collections.sort(supportedPreviewSizes, new Comparator<Camera.Size>() {
        @Override/*from ww  w. j  a v a2  s.c  o  m*/
        public int compare(Camera.Size a, Camera.Size b) {
            int aPixels = a.height * a.width;
            int bPixels = b.height * b.width;
            if (bPixels < aPixels) {
                return -1;
            }
            if (bPixels > aPixels) {
                return 1;
            }
            return 0;
        }
    });

    Point bestSize = null;
    float screenAspectRatio = (float) screenResolution.x / (float) screenResolution.y;

    float diff = Float.POSITIVE_INFINITY;
    for (Camera.Size supportedPreviewSize : supportedPreviewSizes) {
        int realWidth = supportedPreviewSize.width;
        int realHeight = supportedPreviewSize.height;
        int pixels = realWidth * realHeight;
        if (pixels < MIN_PREVIEW_PIXELS || pixels > MAX_PREVIEW_PIXELS) {
            continue;
        }
        boolean isCandidatePortrait = realWidth < realHeight;
        int maybeFlippedWidth = isCandidatePortrait ? realHeight : realWidth;
        int maybeFlippedHeight = isCandidatePortrait ? realWidth : realHeight;
        if (maybeFlippedWidth == screenResolution.x && maybeFlippedHeight == screenResolution.y) {
            return new Point(realWidth, realHeight);
        }
        float aspectRatio = (float) maybeFlippedWidth / (float) maybeFlippedHeight;
        float newDiff = Math.abs(aspectRatio - screenAspectRatio);
        if (newDiff < diff) {
            bestSize = new Point(realWidth, realHeight);
            diff = newDiff;
        }
    }

    if (bestSize == null) {
        Camera.Size defaultSize = parameters.getPreviewSize();
        bestSize = new Point(defaultSize.width, defaultSize.height);
    }
    return bestSize;
}

---

From source file:Main.java

/**
 * Determines the minimum and maximum values in the <tt>array</tt>, ignoring any instances of <tt>noDataValue</tt>.
 * //from w  w w . j a  v a  2s .  co  m
 * @param array
 * @param noDataValue
 * @return a <tt>float[]</tt> where [0]==minimum and [1]==maximum
 */
public static float[] minMax(float[] array, float noDataValue) {
    float[] ret = null;
    float min = Float.POSITIVE_INFINITY, max = Float.NEGATIVE_INFINITY;
    float val;
    for (int i = 0; i < array.length; i++) {
        val = array[i];
        if (val != noDataValue) {
            min = (val < min) ? val : min;
            max = (val > max) ? val : max;
        }
    }
    if (!Float.isInfinite(min) & !Float.isInfinite(max)) {
        ret = new float[] { min, max };
    }

    return ret;
}

---

From source file:uk.co.modularaudio.util.audio.controlinterpolation.CDSpringAndDamperDouble24Interpolator.java

public CDSpringAndDamperDouble24Interpolator() {
    curState.x = 0.0;/*from www  . ja  va2s .co m*/
    curState.v = 0.0;
    this.lowerBound = Float.NEGATIVE_INFINITY;
    this.upperBound = Float.POSITIVE_INFINITY;
    deltaTimestep = INTEGRATION_TIMESTEP_FOR_48K;
}

---

From source file:uk.co.modularaudio.util.audio.controlinterpolation.CDSpringAndDamperDouble12Interpolator.java

public CDSpringAndDamperDouble12Interpolator() {
    curState.x = 0.0;/*from  w  ww.  j a v  a  2 s . c o  m*/
    curState.v = 0.0;
    this.lowerBound = Float.NEGATIVE_INFINITY;
    this.upperBound = Float.POSITIVE_INFINITY;
    deltaTimestep = INTEGRATION_TIMESTEP_FOR_48K;
}

---

From source file:io.druid.query.aggregation.histogram.ApproximateHistogramAggregatorFactory.java

@JsonCreator
public ApproximateHistogramAggregatorFactory(@JsonProperty("name") String name,
        @JsonProperty("fieldName") String fieldName, @JsonProperty("resolution") Integer resolution,
        @JsonProperty("numBuckets") Integer numBuckets, @JsonProperty("lowerLimit") Float lowerLimit,
        @JsonProperty("upperLimit") Float upperLimit

) {/*from  ww w . j  a  v a  2  s .c  om*/
    this.name = name;
    this.fieldName = fieldName;
    this.resolution = resolution == null ? ApproximateHistogram.DEFAULT_HISTOGRAM_SIZE : resolution;
    this.numBuckets = numBuckets == null ? ApproximateHistogram.DEFAULT_BUCKET_SIZE : numBuckets;
    this.lowerLimit = lowerLimit == null ? Float.NEGATIVE_INFINITY : lowerLimit;
    this.upperLimit = upperLimit == null ? Float.POSITIVE_INFINITY : upperLimit;

    Preconditions.checkArgument(this.resolution > 0, "resolution must be greater than 1");
    Preconditions.checkArgument(this.numBuckets > 0, "numBuckets must be greater than 1");
    Preconditions.checkArgument(this.upperLimit > this.lowerLimit,
            "upperLimit must be greater than lowerLimit");
}

---

From source file:uk.co.modularaudio.util.audio.controlinterpolation.SpringAndDamper24Interpolator.java

public SpringAndDamper24Interpolator() {
    curState.x = 0.0f;/*  ww  w  .  ja  v  a 2  s .c om*/
    curState.v = 0.0f;
    this.lowerBound = Float.NEGATIVE_INFINITY;
    this.upperBound = Float.POSITIVE_INFINITY;
    deltaTimestep = INTEGRATION_TIMESTEP_FOR_48K;
}

---

From source file:uk.co.modularaudio.util.audio.controlinterpolation.SpringAndDamperDouble24Interpolator.java

public SpringAndDamperDouble24Interpolator() {
    curState.x = 0.0;//from w  w w  . j a v a 2s . com
    curState.v = 0.0;
    this.lowerBound = Float.NEGATIVE_INFINITY;
    this.upperBound = Float.POSITIVE_INFINITY;
    deltaTimestep = INTEGRATION_TIMESTEP_FOR_48K;
}

---

From source file:net.gtaun.shoebill.data.Location.java

public float distance(Location loc) {
    if (loc.interiorId != interiorId || loc.worldId != worldId)
        return Float.POSITIVE_INFINITY;
    return super.distance(loc);
}

---

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