public void ValueDoubleInt16Test(double realValue, Int16 fixedPointValue, byte wholeBits, byte fractionalBits)
{
// The fixedPointValue may have additional bits set which should be ignored when making the real value. Only the
// bits that make up the whole and fractional parts are considered.
//
fixedPointValue.MakeDouble(wholeBits, fractionalBits).ShouldBe(realValue);
// Some of our test cases pass in "extra" data in the fixed point value. This data is ignored, but it means those
// bits will be 0 when converting from the real value to the FixedPoint so make the value we check again is properly
// masked from the test data.
//
Int16 maskedFixedPointValue = (Int16)(fixedPointValue & (Int16)FixedPoint.FixedPointMask(wholeBits, fractionalBits));
realValue.MakeFixedPoint <Int16>(wholeBits, fractionalBits).ShouldBe(maskedFixedPointValue);
}