Example usage for com.google.common.math DoubleMath fuzzyEquals

Introduction

In this page you can find the example usage for com.google.common.math DoubleMath fuzzyEquals.

Prototype

public static boolean fuzzyEquals(double a, double b, double tolerance)

Source Link

Document

Returns true if a and b are within tolerance of each other.

Usage

From source file:org.eclipse.elk.alg.layered.compaction.oned.CompareFuzzy.java

public static boolean eq(final double d1, final double d2) {
    return DoubleMath.fuzzyEquals(d1, d2, TOLERANCE);
}

From source file:org.tzi.use.util.FloatUtil.java

/**
 * Compares two floats for equality using the default precision defined by
 * {@link Options#DEFAULT_FLOAT_PRECISION}.
 *//*from ww w .j a  v  a 2 s.  c o  m*/
public static boolean equals(float a, float b) {
    return DoubleMath.fuzzyEquals(a, b, EPSILON);
}

From source file:org.tzi.use.util.FloatUtil.java

/**
 * Compares two floats for equality using a given precision.
 * //w  w w. j av a 2s  . co  m
 * @param precision number of decimals where the first difference may occur
 */
public static boolean equals(float a, float b, int precision) {
    return DoubleMath.fuzzyEquals(a, b, Math.pow(10, -precision));
}

From source file:com.opengamma.strata.math.impl.minimization.MinimumBracketer.java

protected void checkInputs(Function<Double, Double> f, double xLower, double xUpper) {
    ArgChecker.notNull(f, "function");
    if (DoubleMath.fuzzyEquals(xLower, xUpper, ZERO)) {
        throw new IllegalArgumentException("Lower and upper values were not distinct");
    }//w  w  w  .  j  av  a  2  s  .co m
}

From source file:com.ibm.og.util.Distributions.java

/**
 * Creates a uniform distribution with a range of [average - spread, average + spread].
 * //from w ww  .ja  v a 2s .  co  m
 * @param average the average value of this distribution
 * @param spread distance from the average
 * @return a uniform distribution instance
 * @throws IllegalArgumentException if average or spread are negative, or if average - spread is
 *         negative
 */
public static Distribution uniform(final double average, final double spread) {
    checkArgument(average >= 0.0, "average must be >= 0.0 [%s]", average);
    checkArgument(spread >= 0.0, "spread must be >= 0.0 [%s]", spread);

    if (DoubleMath.fuzzyEquals(spread, 0.0, Distributions.ERR)) {
        return constant(average);
    }

    final double lower = average - spread;
    final double upper = average + spread;
    checkArgument(lower >= 0.0, "average - spread must be >= 0.0 [%s]", lower);
    final String s = String.format("UniformDistribution [average=%s, spread=%s]", average, spread);
    return new RealDistributionAdapter(new UniformRealDistribution(lower, upper), s);
}

From source file:com.google.errorprone.bugpatterns.testdata.FuzzyEqualsShouldNotBeUsedInEqualsMethodPositiveCases.java

public boolean equals(Object o) {
    // BUG: Diagnostic contains: DoubleMath.fuzzyEquals should never
    DoubleMath.fuzzyEquals(0.2, 9.3, 2.0);
    return true;/*from   w w  w .j a v a  2 s .  c  o  m*/
}

From source file:org.tzi.use.util.FloatUtil.java

/**
 * Compares two doubles for equality using the default precision defined by
 * {@link Options#DEFAULT_FLOAT_PRECISION}.
 *//*from  w  w  w.j  a v a 2 s  . c  o m*/
public static boolean equals(double a, double b) {
    return DoubleMath.fuzzyEquals(a, b, EPSILON);
}

From source file:com.opengamma.strata.math.impl.statistics.distribution.StudentTOneTailedCriticalValueCalculator.java

@Override
public Double apply(Double x) {
    ArgChecker.notNull(x, "x");
    ArgChecker.notNegative(x, "x");
    if (DoubleMath.fuzzyEquals(x, 0.5, 1e-14)) {
        return 0.5;
    }/*from  ww w.  j a va  2 s  . c  o  m*/
    return _dist.getInverseCDF(x);
}

From source file:org.tzi.use.util.FloatUtil.java

/**
 * Compares two doubles for equality using a given precision.
 * /*from  ww  w  .j  a  va2s.c  o m*/
 * @param precision number of decimals where the first difference may occur
 */
public static boolean equals(double a, double b, int precision) {
    return DoubleMath.fuzzyEquals(a, b, Math.pow(10, -precision));
}

From source file:com.opengamma.strata.math.impl.rootfinding.CubicRealRootFinder.java

@Override
public Double[] getRoots(RealPolynomialFunction1D function) {
    ArgChecker.notNull(function, "function");
    double[] coefficients = function.getCoefficients();
    if (coefficients.length != 4) {
        throw new IllegalArgumentException("Function is not a cubic");
    }/*from w  w w  . jav  a  2s.c om*/
    ComplexNumber[] result = ROOT_FINDER.getRoots(function);
    List<Double> reals = new ArrayList<>();
    for (ComplexNumber c : result) {
        if (DoubleMath.fuzzyEquals(c.getImaginary(), 0d, 1e-16)) {
            reals.add(c.getReal());
        }
    }
    ArgChecker.isTrue(reals.size() > 0, "Could not find any real roots");
    return reals.toArray(EMPTY_ARRAY);
}