Example usage for java.lang Double NaN

Introduction

In this page you can find the example usage for java.lang Double NaN.

Prototype

double NaN

To view the source code for java.lang Double NaN.

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Document

A constant holding a Not-a-Number (NaN) value of type double .

Usage

From source file:Main.java

/** Helper method - gets a named attribute's value as a <I>float</I>.
   @param pNodeMap The <I>NamedNodeMap</I>.
   @param strName Name of the attribute.
   @return Value of the attribute./* w  ww.j  ava2  s.  c o  m*/
 */
public static float getAttributeFloat(NamedNodeMap pNodeMap, String strName)
        throws ClassCastException, NumberFormatException {
    double dblReturn = getAttributeDouble(pNodeMap, strName);

    if (Double.NaN == dblReturn)
        return Float.NaN;

    return (float) dblReturn;
}

From source file:Main.java

/** Helper method - gets a named element's value as a <I>float</I>.
   @param pElement The parent <I>Element</I>.
   @param strName Name of the element./*w w w  .  j  a  v  a2 s  .c om*/
   @return Value of the element.
 */
public static float getElementFloat(Element pElement, String strName)
        throws ClassCastException, NumberFormatException {
    double dblReturn = getElementDouble(pElement, strName);

    if (Double.NaN == dblReturn)
        return Float.NaN;

    return (float) dblReturn;
}

From source file:Main.java

/**
 * Determines the minimum and maximum values in the <tt>array</tt>. Calls {@link #minMax(double[], double)} with <tt>Double.NaN</tt> as
 * the <tt>noDataValue</tt>.
 * /*from  www  .java  2 s. c om*/
 * @param array
 * @return a <tt>double[]</tt> where [0]==minimum and [1]==maximum
 * @see #minMax(double[], double)
 */
public static double[] minMax(double[] array) {
    return minMax(array, Double.NaN);
}

From source file:Main.java

/** Helper method - gets a named element's value as a <I>double</I>.
   @param pElement The parent <I>Element</I>.
   @param strName Name of the element./*w ww .  j  a va2 s. c o  m*/
   @return Value of the element.
 */
public static double getElementDouble(Element pElement, String strName)
        throws ClassCastException, NumberFormatException {
    String strValue = getElementString(pElement, strName);

    if (null == strValue)
        return Double.NaN;

    return Double.parseDouble(strValue);
}

From source file:Calculator.java

public static double calculate(double op1, double op2, String operation) {
    switch (operation) {
    case "+":
        return op1 + op2;
    case "-":
        return op1 - op2;
    case "*":
        return op1 * op2;
    case "/":
        return op1 / op2;
    }//from   w w  w  .j  a v  a2s .  c  o m

    return Double.NaN;
}

From source file:Main.java

/** Locate a sub-element tagged 'name', return its value.
 *
 *  @param element Element where to start looking. May be null.
 *  @param name Name of sub-element to locate.
 *
 *  @return Returns string that was found or NaN
 *  @throws Exception on error in number format
 *///from   w  w  w .  j a  va  2 s .  c  o  m
final public static double getSubelementDouble(final Element element, final String name) throws Exception {
    return getSubelementDouble(element, name, Double.NaN);
}

From source file:Main.java

/** Helper method - gets a named attribute's value as a <I>double</I>.
   @param pNodeMap The <I>NamedNodeMap</I>.
   @param strName Name of the attribute.
   @return Value of the attribute.//from w w w . ja  va2s  .c o m
 */
public static double getAttributeDouble(NamedNodeMap pNodeMap, String strName)
        throws ClassCastException, NumberFormatException {
    String strValue = getAttributeString(pNodeMap, strName);

    if (null == strValue)
        return Double.NaN;

    return Double.parseDouble(strValue);
}

From source file:Main.java

public static double getQuantile(Collection<Double> l, double alpha) {
    List<Double> sorted = new ArrayList<Double>(l);
    Collections.sort(sorted);/*from w  ww .j  av  a  2s . c o m*/
    int size = sorted.size();

    if (size == 0)
        return Double.NaN;

    double kDouble = (size - 1) * alpha;
    int k = (int) Math.floor(kDouble);
    double g = kDouble - k;

    double lowerValue = sorted.get(k);

    if (sorted.size() <= k + 1)
        return lowerValue;

    double upperValue = sorted.get(k + 1);

    return (1 - g) * lowerValue + g * upperValue;

}

From source file:Main.java

/**
 * For a double precision value x, this method returns +1.0 if x >= 0 and
 * -1.0 if x < 0. Returns <code>NaN</code> if <code>x</code> is
 * <code>NaN</code>.//from w  w  w  .j a va 2s  . c  o m
 * 
 * @param x the value, a double
 * @return +1.0 or -1.0, depending on the sign of x
 */
public static double indicator(final double x) {
    if (Double.isNaN(x)) {
        return Double.NaN;
    }
    return (x >= 0.0) ? 1.0 : -1.0;
}

From source file:com.candy.algo.SMA.java

public static double[] Sma(double inputs[], int windowSize) {
    // Get a DescriptiveStatistics instance
    DescriptiveStatistics stats = new DescriptiveStatistics();
    stats.setWindowSize(windowSize);/*from  www . j a  v a2s . c o  m*/
    double[] sma = new double[inputs.length];
    for (int i = 0; i < inputs.length; i++) {
        stats.addValue(inputs[i]);
        if (i >= (windowSize - 1))
            sma[i] = stats.getMean();
        else
            sma[i] = Double.NaN;
    }
    return sma;
}