Example usage for java.lang Math cosh

Introduction

In this page you can find the example usage for java.lang Math cosh.

Prototype

public static double cosh(double x)

Source Link

Document

Returns the hyperbolic cosine of a double value.

Usage

From source file:com.nextbreakpoint.nextfractal.mandelbrot.core.Expression.java

public static Number funcTan(MutableNumber out, Number x) {
    double d = Math.pow(Math.cos(x.r()), 2) + Math.pow(Math.sinh(x.i()), 2);
    return out.set((Math.sin(x.r()) * Math.cos(x.r())) / d, (Math.sinh(x.i()) * Math.cosh(x.i())) / d);
}

From source file:com.facebook.presto.operator.scalar.MathFunctions.java

@Description("hyperbolic cosine")
@ScalarFunction// w w w  .java2s  . c om
@SqlType(StandardTypes.DOUBLE)
public static double cosh(@SqlType(StandardTypes.DOUBLE) double num) {
    return Math.cosh(num);
}

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the hyperbolic cosine of the number.
 * /*from w  ww  . j  a va2  s.c o  m*/
 * @param a the number
 * @return the hyperbolic cosine of the number
 * @see Math#cosh(double)
 */
public static Number cosh(Number a) {
    return Math.cosh(a.doubleValue());
}

From source file:blusunrize.immersiveengineering.api.ApiUtils.java

public static Vec3d[] getConnectionCatenary(Vec3d start, Vec3d end, double slack, @Nullable Connection c) {
    double dx = (end.x) - (start.x);
    double dy = (end.y) - (start.y);
    double dz = (end.z) - (start.z);
    double dw = Math.sqrt(dx * dx + dz * dz);
    double k = Math.sqrt(dx * dx + dy * dy + dz * dz) * slack;
    double l = 0;
    int limiter = 0;
    while (limiter < 300) {
        limiter++;//w  w  w  .  j  a va2 s. com
        l += 0.01;
        if (Math.sinh(l) / l >= Math.sqrt(k * k - dy * dy) / dw)
            break;
    }
    double a = dw / 2 / l;
    double offsetX = (0 + dw - a * Math.log((k + dy) / (k - dy))) * 0.5;
    double offsetY = (dy + 0 - k * Math.cosh(l) / Math.sinh(l)) * 0.5;
    if (c != null) {
        c.catOffsetX = offsetX;
        c.catOffsetY = offsetY;
        c.catA = a;
        c.horizontalLength = dw;
    }

    Vec3d[] vex = new Vec3d[vertices + 1];

    vex[0] = new Vec3d(start.x, start.y, start.z);
    for (int i = 1; i < vertices; i++) {
        float posRelative = i / (float) vertices;
        double x = 0 + dx * posRelative;
        double z = 0 + dz * posRelative;
        double y = a * Math.cosh((dw * posRelative - offsetX) / a) + offsetY;
        vex[i] = new Vec3d(start.x + x, start.y + y, start.z + z);
    }
    vex[vertices] = new Vec3d(end.x, end.y, end.z);

    return vex;
}

From source file:edu.cmu.tetrad.test.TestStatUtils.java

public void testLogCoshExp() {
    double sum = 0.0;
    int numSamples = 10000000;

    for (int i = 0; i < numSamples; i++) {
        double randNorm = RandomUtil.getInstance().nextNormal(0, 1);

        double a = Math.log(Math.cosh(randNorm));

        sum += a;/*from   w  w w  .  j av a2s . co m*/
    }

    double b = sum / numSamples;

    System.out.println(b);
}

From source file:com.rapidminer.tools.expression.internal.function.AntlrParserTrigonometricTest.java

@Test
public void coshInt() {
    try {/*from  ww  w.  j  a  va  2  s  . c om*/
        Expression expression = getExpressionWithFunctionContext("cosh(16)");
        assertEquals(ExpressionType.DOUBLE, expression.getExpressionType());
        assertEquals(Math.cosh(16), expression.evaluateNumerical(), 1e-15);
    } catch (ExpressionException e) {
        assertNotNull(e.getMessage());
    }
}

From source file:com.rapidminer.tools.expression.internal.function.AntlrParserTrigonometricTest.java

@Test
public void coshDouble() {
    try {//from  www . j av  a2 s  .  com
        Expression expression = getExpressionWithFunctionContext("cosh(33.3)");
        assertEquals(ExpressionType.DOUBLE, expression.getExpressionType());
        assertEquals(Math.cosh(33.3), expression.evaluateNumerical(), 1e-15);
    } catch (ExpressionException e) {
        assertNotNull(e.getMessage());
    }
}

From source file:com.rapidminer.tools.expression.internal.function.AntlrParserTrigonometricTest.java

@Test
public void coshNegative() {
    try {//from ww  w.  j  av  a 2s.  c  o m
        Expression expression = getExpressionWithFunctionContext("cosh(-10)");
        assertEquals(ExpressionType.DOUBLE, expression.getExpressionType());
        assertEquals(Math.cosh(-10), expression.evaluateNumerical(), 1e-15);
    } catch (ExpressionException e) {
        assertNotNull(e.getMessage());
    }
}

From source file:com.rapidminer.tools.expression.internal.function.AntlrParserTrigonometricTest.java

@Test
public void coshNull() {
    try {/*  w  w  w.  ja v a  2 s .c om*/
        Expression expression = getExpressionWithFunctionContext("cosh(0)");
        assertEquals(ExpressionType.DOUBLE, expression.getExpressionType());
        assertEquals(Math.cosh(0), expression.evaluateNumerical(), 1e-15);
    } catch (ExpressionException e) {
        assertNotNull(e.getMessage());
    }
}

From source file:com.rapidminer.tools.expression.internal.function.AntlrParserTrigonometricTest.java

@Test
public void coshNinety() {
    try {/* w w w .  j a va 2s.com*/
        Expression expression = getExpressionWithFunctionContext("cosh(90)");
        assertEquals(ExpressionType.DOUBLE, expression.getExpressionType());
        assertEquals(Math.cosh(90), expression.evaluateNumerical(), 1e-15);
    } catch (ExpressionException e) {
        assertNotNull(e.getMessage());
    }
}