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Convert integers to positive values

Convert negative and positive integers to a positive value by using an overlap and interleave scheme (more info: http://en.wikipedia.org/wiki/Golomb_coding).

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    let toUnsigned x = 
        if x >= 0 then 
            2*x
        else
            (-2*x) - 1
    let toSigned x =
        if x % 2 = 0 then
            x/2
        else
            (x+1)/(-2)
val toUnsigned : x:int -> int

Full name: Script.toUnsigned
val x : int
val toSigned : x:int -> int

Full name: Script.toSigned
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Link:http://fssnip.net/jK
Posted:4 years ago
Author:Samuel Bosch
Tags: math