Minimal extension to make trig work with a custom type

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  • julia

    The Julia Programming Language

    I found it in the source code for Base. You were definitely right. The sin function, for instance, is written there as sin(x::T) where T <: Union{Float32, Float64}, which then calls a sin kernel function for T, and that, at least as it’s written there, definitely can’t take nonfloats. I can’t tell yet if the math it’s doing actually requires floats, but the built in method for it involves multiplying the input by 0.5, so you’d have to redefine that completely or give it a way of promoting the input to float.

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