Example usage for org.apache.commons.math4.stat.descriptive SummaryStatistics addValue

Introduction

In this page you can find the example usage for org.apache.commons.math4.stat.descriptive SummaryStatistics addValue.

Prototype

public void addValue(double value) 

Source Link

Document

Add a value to the data

Usage

From source file:RealFunctionValidation.java

public static SummaryStatistics assessAccuracy(final Method method, final DataInputStream in,
        final DataOutputStream out)
        throws IOException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {

    if (method.getReturnType() != Double.TYPE) {
        throw new IllegalArgumentException("method must return a double");
    }/*ww w.  j  av  a 2  s  .c om*/

    final Class<?>[] types = method.getParameterTypes();
    for (int i = 0; i < types.length; i++) {
        if (!types[i].isPrimitive()) {
            final StringBuilder builder = new StringBuilder();
            builder.append("argument #").append(i + 1).append(" of method ").append(method.getName())
                    .append("must be of primitive of type");
            throw new IllegalArgumentException(builder.toString());
        }
    }

    final SummaryStatistics stat = new SummaryStatistics();
    final Object[] parameters = new Object[types.length];
    while (true) {
        try {
            for (int i = 0; i < parameters.length; i++) {
                parameters[i] = readAndWritePrimitiveValue(in, out, types[i]);
            }
            final double expected = in.readDouble();
            if (FastMath.abs(expected) > 1E-16) {
                final Object value = method.invoke(null, parameters);
                final double actual = ((Double) value).doubleValue();
                final double err = FastMath.abs(actual - expected);
                final double ulps = err / FastMath.ulp(expected);
                out.writeDouble(expected);
                out.writeDouble(actual);
                out.writeDouble(ulps);
                stat.addValue(ulps);
            }
        } catch (EOFException e) {
            break;
        }
    }
    return stat;
}

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