feat(types): canonical H2O column wrappers — top/bot/pearson_corr/std/__pow__#12
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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced May 15, 2026
raypy_kdb.c uses getaddrinfo + struct addrinfo from <netdb.h>, which glibc only exposes when _GNU_SOURCE (or _POSIX_C_SOURCE >= 200112L) is set. Without it, -std=c17 -Werror build fails on Linux with 'incomplete type struct addrinfo'.
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Summary
Single commit on top of
rayforce2adding Column methods needed for canonical H2O groupby coverage in rayforce-bench. 56 lines across 3 files — pure Python AST additions, no C/FFI changes.New methods on
Column/AggregationMixinColumn("v3").top(n)— n largest per group, descending (canonical H2O q8)Column("v3").bot(n)— n smallest per group, ascendingColumn("v1").pearson_corr(Column("v2"))— Pearson correlation (q9, with** 2second stage)Column("v3").std()— sample stddev, ddof=1, matches polars/pandas (q6 stddev side)Column("v3") ** 2(__pow__/__rpow__)New
Operationenum entriesPOW,STDDEV,PEARSON_CORR,TOP,BOT.MEDIANandDEVIATIONalready existed (engine verbsmed/dev).Each wrapper is a 1-line
return Expression(Operation.X, self, …)— relies only on the existing Expression-AST mechanism.Engine support
Verb names match engine opcodes landing in:
top,bot,pearson_corr,powprimitives)Test plan
rayforce2make check LOCAL=1in rayforce-bench →pass — 665/665