copyArrayInterpolated

[FDSoftware]

I hope this is a better approach to "putting an array of X size to a one of Y size" problem of #8931

template using with another rounding different from 2 digits should be a bit painful

copyArrayInterpolated<float, float, 4, 2, 1>(dest, src);

But by using the argument in the template I can use/abuse of constexpr if's
https://en.cppreference.com/w/cpp/language/if.html#Constexpr_if