Data.FastDigits

Convert an integer to digits and back. Usually this library is twice as fast as Data.Digits. For small bases and long numbers it may be up to 30 times faster.

Documentation

digits

Arguments

:: Int

The base to use

-> Integer

The integer to convert

-> [Int]

Return digits of a non-negative integer in reverse order. E. g.,

digits 10 123 = [3, 2, 1]
digits 10 0   = []

Throw an error if number is negative or base is below 2.

undigits

Arguments

:: (Integral a, Integral b)

=> a

The base to use

-> [b]

The list of digits to convert

-> Integer

Return an integer, built from given digits in reverse order. Condition 0 <= digit < base is not checked.