private double GetSampleForLargeRange() {
// The distribution of double value returned by Sample
// is not distributed well enough for a large range.
// If we use Sample for a range [Int32.MinValue..Int32.MaxValue)
// We will end up getting even numbers only.
int result = InternalSample();
// Note we can't use addition here. The distribution will be bad if we do that.
bool negative = (InternalSample()%2 == 0) ? true : false; // decide the sign based on second sample
if( negative) {
result = -result;
}
double d = result;
d += (Int32.MaxValue - 1); // get a number in range [0 .. 2 * Int32MaxValue - 1)
d /= 2*(uint)Int32.MaxValue - 1 ;
return d;
}