/* (non-Javadoc)
* @see fr.expression4j.core.Expression#evaluate(fr.expression4j.core.Parameters)
*/
public MathematicalElement evaluate(OperatorManager operatorManager, Parameters parameters)
throws EvalException {
try {
MathematicalElement x = parameters.getParameter("x");
return NumberFactory.createReal(
new BigDecimal(Math.atan(x.getRealValue(mc).doubleValue()), mc));
} catch (ParametersException pe) {
throw new EvalException("Could not find parameter x for function " + getName());
}
}
