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Link: http://codepad.org/540ThLyz    [ raw code | fork ]

aaronla - C, pasted on Jun 25:
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int f(int x)
{
    if (x == 0 || x == INT_MIN)
        return x;
    else
    {
        if (x == INT_MAX || x == -INT_MAX)
        {
            return -INT_MAX;
        }
        if (x > 0)
        {
            return x & 1 ? x + 1 : 1 - x;
        }
        else
        {
            return x & 1 ? x - 1 : -1 - x;
        }
    }
}


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