Provides the fixed-point decimal type FixedDecimal allowing for exact representations of
decimal numbers. These numbers are useful in financial calculations where interactions
between decimal numbers are required to be exact.
This library defines the type FixedDecimal{T <: Integer, f} as a subtype of Real. The
parameter T is the underlying machine representation and f is the number of decimal
places which can be stored.
For example, FixedDecimal{Int8, 2} allows you to a decimal number with up to 2 fractional
digits. All FixedDecimal{Int8, 2} numbers x must satisfy
-1.28 = -128/10² ≤ x ≤ 127/10² = 1.27
because the range of Int8 is from -128 to 127.
In general FixedDecimal{T <: Integer, f} numbers y must satisfy:
typemin(T)/10ᶠ ≤ y ≤ typemax(T)/10ᶠ
julia> using FixedPointDecimals
julia> 2.2 / 10
0.22000000000000003
julia> FixedDecimal{Int,2}(2.2) / 10
FixedDecimal{Int64,2}(0.22)
julia> 0.1 + 0.2
0.30000000000000004
julia> FixedDecimal{Int,1}(0.1) + FixedDecimal{Int,1}(0.2)
FixedDecimal{Int64,1}(0.3)