[SPARK-57178][SQL] Simplify Asinh codegen by extracting a static Java helper#56229
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[SPARK-57178][SQL] Simplify Asinh codegen by extracting a static Java helper#56229gengliangwang wants to merge 1 commit into
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… helper ### What changes were proposed in this pull request? Add `ExpressionImplUtils.asinh(double x)` (the fdlibm `s_asinh.c` algorithm) and route `Asinh`'s eval and codegen paths through it. `Asinh.doGenCode` previously emitted a ~14-line inline five-branch if/else; it now emits a single `ExpressionImplUtils.asinh(...)` call via `defineCodeGen`, and the eval path calls the same helper instead of an inline lambda copy of the algorithm. `asinh` returns a primitive `double`, so the helper is a clean drop-in for both paths with no boxing and no null handling. Sibling of SPARK-57177 (Acosh). ### Why are the changes needed? Part of SPARK-56908 (umbrella). Collapsing the duplicated ~14-line algorithm to a single call shrinks the generated Java for every stage that uses `asinh`, and removes the eval/codegen duplication of the same fdlibm algorithm. ### Does this PR introduce _any_ user-facing change? No. The compiled behavior is identical; only the emitted Java source text changes. ### How was this patch tested? ``` build/sbt "catalyst/testOnly *MathExpressionsSuite" ``` Pass, including `asinh` and `SPARK-56089: asinh/acosh fdlibm algorithm coverage` (exercised both with and without whole-stage codegen). ### Was this patch authored or co-authored using generative AI tooling? Generated-by: Claude Code (Opus 4.8) Co-authored-by: Isaac
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What changes were proposed in this pull request?
Add
ExpressionImplUtils.asinh(double x)(the fdlibms_asinh.calgorithm) and routeAsinh's eval and codegen paths through it.Asinh.doGenCodepreviously emitted a ~14-line inline five-branch if/else; it now emits a singleExpressionImplUtils.asinh(...)call viadefineCodeGen, and the eval path calls the same helper instead of an inline lambda copy of the algorithm.asinhreturns a primitivedouble, so the helper is a clean drop-in for both paths with no boxing and no null handling. Sibling of SPARK-57177 (Acosh).Why are the changes needed?
Part of SPARK-56908 (umbrella). Collapsing the duplicated ~14-line algorithm to a single call shrinks the generated Java for every stage that uses
asinh, and removes the eval/codegen duplication of the same fdlibm algorithm, helping with the JVM 64KB method / constant-pool limits, Janino compile time, and JIT work.Does this PR introduce any user-facing change?
No. The compiled behavior is identical; only the emitted Java source text changes.
How was this patch tested?
Pass, including
asinhandSPARK-56089: asinh/acosh fdlibm algorithm coverage(exercised both with and without whole-stage codegen).Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Code (Opus 4.8)