The private class RWMultiPrecisionInt<n> provides a very large number of bits of precision for representing decimals. By replacing the <n> in RWMultiPrecisionInt<n> with an integer from 1 to 16, you can specify up to 16 *32, or 512 bits of precision. For example, the following declaration creates a number that will have 5 *32 or 160 bits of precision:

RWMultiPrecisionInt<n> has been specialized for n =1, since this case would use only one integer to represent a value, and you would be better off simply using an int. When n= 1, a type double stores the integer value.

The speed of computation changes depend upon the number of bits used for precision. This means that a computation that uses class RWDecimal<RWMultiPrecisionInt<1> > is faster than the same computation using RWDecimal<RWMultiPrecisionInt<16> >.