public static final Function<String,BigInteger> toBigInteger(final RoundingMode roundingMode, final DecimalPoint decimalPoint) {
        return new ToBigInteger(roundingMode, decimalPoint);
    }
public static final Function < String , BigInteger > toBigInteger ( final RoundingMode roundingMode , final DecimalPoint decimalPoint ) { return new ToBigInteger ( roundingMode , decimalPoint ) ; }
<p>
Converts a String into a BigInteger, using the specified decimal point
configuration ({@link DecimalPoint}). Rounding mode is used for removing the
decimal part of the number. The target String should contain no
thousand separators.
Any fractional part of the input String will be removed.
</p>

@param roundingMode the rounding mode to be used when setting the scale
@param decimalPoint the decimal point being used by the String
@return the resulting BigInteger object