Examples of org.apache.commons.math3.complex.Complex.tanh()

org.apache.commons.math3.complex.Complex.tanh()

orld.wolfram.com/HyperbolicTangent.html" TARGET="_top"> hyperbolic tangent of this complex number. Implements the formula:

  tan(a + bi) = sinh(2a)/(cosh(2a)+cos(2b)) + [sin(2b)/(cosh(2a)+cos(2b))]i

where the (real) functions on the right-hand side are {@link FastMath#sin}, {@link FastMath#cos}, {@link FastMath#cosh} and{@link FastMath#sinh}.
Returns {@link Complex#NaN} if either real or imaginary part of theinput argument is {@code NaN}.
Infinite values in real or imaginary parts of the input may result in infinite or NaN values returned in parts of the result.

 Examples:  tanh(a ± INFINITY i) = NaN + NaN i tanh(±INFINITY + bi) = ±1 + 0 i tanh(±INFINITY ± INFINITY i) = NaN + NaN i tanh(0 + (π/2)i) = NaN + INFINITY i

@return the hyperbolic tangent of {@code this}. @since 1.2

        } else if (token.equals("sqrt")) {
          stackAnswer.push(complexFormat.format(a.sqrt()));
        } else if (token.equals("tan")) {
          stackAnswer.push(complexFormat.format(a.tan()));
        } else if (token.equals("tanh")) {
          stackAnswer.push(complexFormat.format(a.tanh()));
        } else if (token.equals("pow")) {
          Complex b = complexFormat.parse(stackAnswer.pop());
          stackAnswer.push(complexFormat.format(b.pow(a)));
        }
      }

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