org.openpdf.renderer.function.postscript.operation.Atan Maven / Gradle / Ivy

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PDF renderer implementation supporting the subset of PDF 1.4 specification.

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package org.openpdf.renderer.function.postscript.operation;

import java.util.Stack;


final class Atan implements PostScriptOperation {
	@Override
	/**
	 * num den atan angle 
	 *
	 * returns the angle (in degress between
	 * 0 and 360) whose tangent is num divided by den.
	 * Either num or den may be 0, but not both. The signs
	 * of num and den determine the quadrant in which the
	 * result will lie: positive num yeilds a result in the
	 * positive y plane, while a positive den yeilds a result in
	 * the positive x plane. The result is a real number.

	 *
	 * errors: stackunderflow, typecheck, undefinedresult
	 */
	public void eval(Stack