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I'm tuning a function to data over 4-5 variables using Differential Evolution. The objective function calls frequently interpolation function. I came to a point, where compiling the objective function should make things much faster. But interpolation function cannot be compiled.

Is there compilable implementation of linear interpolation function over 2 variables that is faster or of similar speed with uncompilable internal interpolation function?

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It's hard to give suggestions without a specific code sample, can you add one? –  xzczd Apr 18 at 4:04

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