/**
* Reads the ptg data from the array starting at the specified position
*
* @param data the RPN array
* @param pos the current position in the array, excluding the ptg identifier
* @return the number of bytes read
*/
public int read(byte[] data, int pos)
{
int index = IntegerHelper.getInt(data[pos], data[pos + 1]);
function = Function.getFunction(index);
Assert.verify(function != Function.UNKNOWN, "function code " + index);
return(2);
}
/**
* Reads the ptg data from the array starting at the specified position
*
* @param data the RPN array
* @param pos the current position in the array, excluding the ptg identifier
* @return the number of bytes read
* @exception FormulaException
*/
public int read(byte[] data, int pos)
{
arguments = data[pos];
int index = IntegerHelper.getInt(data[pos + 1], data[pos + 2]);
function = Function.getFunction(index);
if (function == Function.UNKNOWN)
{
throw new FormulaException(FormulaException.UNRECOGNIZED_FUNCTION,
index);
}
return(3);
}