Function Decrement

src/cryptlib/integer.cpp:199–210

}

static word Decrement(word *A, unsigned int N, word B=1)
{
    assert(N);
    word t = A[0];
    A[0] = t-B;
    if (A[0] <= t)
        return 0;
    for (unsigned i=1; i<N; i++)
        if (A[i]--)
            return 0;
    return 1;
}

static void TwosComplement(word *A, unsigned int N)
{