[all-commits] [llvm/llvm-project] 0bedb6: [mlir][math] Improved math.atan approximation

[Rob Suderman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 0bedb667af1d105a243d5ad08a460f8b218724cb
      https://github.com/llvm/llvm-project/commit/0bedb667af1d105a243d5ad08a460f8b218724cb
  Author: Robert Suderman <suderman at google.com>
  Date:   2023-06-23 (Fri, 23 Jun 2023)

  Changed paths:
    M mlir/lib/Dialect/Math/Transforms/PolynomialApproximation.cpp
    M mlir/test/Dialect/Math/polynomial-approximation.mlir
    M mlir/test/mlir-cpu-runner/math-polynomial-approx.mlir

  Log Message:
  -----------
  [mlir][math] Improved math.atan approximation

Used the cephes numerical approximation for `math.atan`. This is a
significant accuracy improvement over the previous taylor series
approximation.

Reviewed By: jpienaar

Differential Revision: https://reviews.llvm.org/D153656