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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 Cvr implements PostScriptOperation {
	@Override
	/**
	 * num cvr real or string cvr real 
	 *
	 * (convert to real) takes an integer, real, or string
	 * object and produces a real result. If the operand
	 * is an integer, cvr converts it to a real number.
	 * If the operand is a real number, cvr simply returns it.
	 * If the operand is a string, cvr invokes the equivalent
	 * of the token operator to interpret the characters of
	 * the string as a number according to the PostScript
	 * syntax rules. If that number is an integer, cvr converts
	 * it to a real number. 

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