File: src/gallery-mathcanvas/js/Arctangent.js
/**
* @module gallery-mathcanvas
*/
/**********************************************************************
* <p>Inverse trigonometric cosine.</p>
*
* @namespace MathFunction
* @class Arctangent
* @extends MathFunction.FunctionWithArgs
* @constructor
* @param f {MathFunction}
*/
function MathArctangent(
/* MathFunction */ f)
{
MathArctangent.superclass.constructor.call(this, MathArctangent.NAME, f);
}
MathArctangent.NAME = 'arctan';
Y.extend(MathArctangent, MathFunctionWithArgs,
{
/**
* @method evaluate
* @param var_list {Object} map of variable names to values or MathFunctions
* @return the value of the function
*/
evaluate: function(
/* map */ var_list)
{
return Math.atan(this.args[0].evaluate(var_list));
}
});
MathFunction.Arctangent = MathArctangent;
MathFunction.name_map[ MathArctangent.NAME ] =
{
applyTo: function(f)
{
return new MathArctangent(f);
}
};