How to use

exp

method

in

javolution.lang.MathLib

/**
 * Returns the hyperbolic sine of x.
 * 
 * @param x the value for which the hyperbolic sine is calculated.
 * @return <code>(exp(x) - exp(-x)) / 2</code>
 **/
public static double sinh(double x) {
  return (MathLib.exp(x) - MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic cosine of x.
 * 
 * @param x the value for which the hyperbolic cosine is calculated.
 * @return <code>(exp(x) + exp(-x)) / 2</code>
 **/
public static double cosh(double x) {
  return (MathLib.exp(x) + MathLib.exp(-x)) * 0.5;
}
/**/

/**
 * Returns the hyperbolic cosine of x.
 * 
 * @param x the value for which the hyperbolic cosine is calculated.
 * @return <code>(exp(x) + exp(-x)) / 2</code>
 **/
public static double cosh(double x) {
  return (MathLib.exp(x) + MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic tangent of x.
 * 
 * @param x the value for which the hyperbolic tangent is calculated.
 * @return <code>(exp(2 * x) - 1) / (exp(2 * x) + 1)</code>
 **/
public static double tanh(double x) {
  return (MathLib.exp(2 * x) - 1) / (MathLib.exp(2 * x) + 1);
}

/**
 * Returns the hyperbolic cosine of x.
 * 
 * @param x the value for which the hyperbolic cosine is calculated.
 * @return <code>(exp(x) + exp(-x)) / 2</code>
 **/
public static double cosh(double x) {
  return (MathLib.exp(x) + MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic cosine of x.
 * 
 * @param x the value for which the hyperbolic cosine is calculated.
 * @return <code>(exp(x) + exp(-x)) / 2</code>
 **/
public static double cosh(double x) {
  return (MathLib.exp(x) + MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic sine of x.
 * 
 * @param x the value for which the hyperbolic sine is calculated.
 * @return <code>(exp(x) - exp(-x)) / 2</code>
 **/
public static double sinh(double x) {
  return (MathLib.exp(x) - MathLib.exp(-x)) * 0.5;
}
/**/

/**
 * Returns the hyperbolic tangent of x.
 * 
 * @param x the value for which the hyperbolic tangent is calculated.
 * @return <code>(exp(2 * x) - 1) / (exp(2 * x) + 1)</code>
 **/
public static double tanh(double x) {
  return (MathLib.exp(2 * x) - 1) / (MathLib.exp(2 * x) + 1);
}
/**/

/**
 * Returns the hyperbolic tangent of x.
 * 
 * @param x the value for which the hyperbolic tangent is calculated.
 * @return <code>(exp(2 * x) - 1) / (exp(2 * x) + 1)</code>
 **/
public static double tanh(double x) {
  return (MathLib.exp(2 * x) - 1) / (MathLib.exp(2 * x) + 1);
}

/**
 * Returns the hyperbolic sine of x.
 * 
 * @param x the value for which the hyperbolic sine is calculated.
 * @return <code>(exp(x) - exp(-x)) / 2</code>
 **/
public static double sinh(double x) {
  return (MathLib.exp(x) - MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic sine of x.
 * 
 * @param x the value for which the hyperbolic sine is calculated.
 * @return <code>(exp(x) - exp(-x)) / 2</code>
 **/
public static double sinh(double x) {
  return (MathLib.exp(x) - MathLib.exp(-x)) * 0.5;
}

/**
 * Returns the hyperbolic tangent of x.
 * 
 * @param x the value for which the hyperbolic tangent is calculated.
 * @return <code>(exp(2 * x) - 1) / (exp(2 * x) + 1)</code>
 **/
public static double tanh(double x) {
  return (MathLib.exp(2 * x) - 1) / (MathLib.exp(2 * x) + 1);
}

/**
 * Returns the exponential number <i>e</i> raised to the power of this
 * number.
 *
 * @return <code>exp(this)</code>.
 */
public Float64 exp() {
  Float64 r = FACTORY.object();
  r._value = MathLib.exp(this._value);
  return r;
}

/**
 * Returns the value of the first argument raised to the power of the
 * second argument. 
 *
 * @param x the base.
 * @param y the exponent.
 * @return <code>x<sup>y</sup></code>
 **/
public static double pow(double x, double y) {
  // Use close approximation (+/- LSB)
  if ((x < 0) && (y == (int) y))
    return (((int) y) & 1) == 0 ? pow(-x, y) : -pow(-x, y);
  return MathLib.exp(y * MathLib.log(x));
}

/**
 * Returns the value of the first argument raised to the power of the
 * second argument. 
 *
 * @param x the base.
 * @param y the exponent.
 * @return <code>x<sup>y</sup></code>
 **/
public static double pow(double x, double y) {
  // Use close approximation (+/- LSB)
  if ((x < 0) && (y == (int) y))
    return (((int) y) & 1) == 0 ? pow(-x, y) : -pow(-x, y);
  return MathLib.exp(y * MathLib.log(x));
}

/**
 * Returns the value of the first argument raised to the power of the
 * second argument. 
 *
 * @param x the base.
 * @param y the exponent.
 * @return <code>x<sup>y</sup></code>
 **/
public static double pow(double x, double y) {
  // Use close approximation (+/- LSB)
  if ((x < 0) && (y == (int) y))
    return (((int) y) & 1) == 0 ? pow(-x, y) : -pow(-x, y);
  return MathLib.exp(y * MathLib.log(x));
}

/**
 * Returns the exponential number <i>e</i> raised to the power of
 * this complex.
 * Note: <code><i><b>e</b></i><sup><font size=+0><b>PI</b>*<i><b>i
 * </b></i></font></sup> = -1</code>
 *
 * @return  <code>exp(this)</code>.
 */
public Complex exp() {
  Complex c = FACTORY.object();
  double m = MathLib.exp(this._real);
  c._real = m * MathLib.cos(this._imaginary);
  c._imaginary = m * MathLib.sin(this._imaginary);
  return c;
}

/**
 * Returns this complex raised to the power of the specified complex
 * exponent.
 *
 * @param   that the exponent.
 * @return  <code>this**that</code>.
 */
public Complex pow(Complex that) {
  Complex c = FACTORY.object();
  double r1 = MathLib.log(this.magnitude());
  double i1 = this.argument();
  double r2 = (r1 * that._real) - (i1 * that._imaginary);
  double i2 = (r1 * that._imaginary) + (i1 * that._real);
  double m = MathLib.exp(r2);
  c._real = m * MathLib.cos(i2);
  c._imaginary = m * MathLib.sin(i2);
  return c;
}