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Rationals and Modulo #647

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daniel-frisch-kit opened this issue May 12, 2023 · 0 comments
Open

Rationals and Modulo #647

daniel-frisch-kit opened this issue May 12, 2023 · 0 comments

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@daniel-frisch-kit
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Differentiation with modulo function yields a Float, even for Rational input.

What doesn't work:

ForwardDiff.derivative(x->mod(x^2,1), 1//3)
0.6666666666666666

What works:

ForwardDiff.derivative(x->x^2, 1//3)
2//3

mod(1//2,1)
1//2
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