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  1. Apache Arrow
  2. ARROW-9891

[Rust] [DataFusion] Make math functions support f32

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      Given a math function `g`, we compute g(f32) using g(cast(f32 AS f64)).

      The goal of this issue is to make the operation be cast(g(f32) AS f64) instead.

      Since computations on f32 are faster than on f64, this is a simple optimization.

       

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              jorgecarleitao Jorge Leitão
              jorgecarleitao Jorge Leitão
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