I’m sorry to ask this without specific cases(i can’t find that), but our team guess that the following code raise the
while y != zero(R) q = div(x, y) x, y = y, x - y * q s0, s1 = s1, s0 - q * s1 t0, t1 = t1, t0 - q * t1 end
while guarantees that
y is nonzero hence
div must work properly, but error occurs. Anybody has a clue?
ps. One coworker guessed that the large integers may be a suspect. Is it possible? If then, how we overcome this issue?
ps2. I just found a case!
julia> div(-9223372036854775808,-1) ERROR: LoadError: DivideError: integer division error Stacktrace:  div(x::Int64, y::Int64) @ Base .\int.jl:284
Is this overflow issue?
julia> typemax(Int64) 9223372036854775807 julia> -9223372036854775808 -9223372036854775808