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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 Sub implements PostScriptOperation {
	@Override
	/**
	 * num1 num2 sub difference 
	 *
	 * returns the result of subtracting num2 from num1.
	 * If both operands are integers and the result is within
	 * integer range, the result is an integer; otherwise,
	 * the result is a real number. 

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