feat: add C implementation for stats/base/dists/betaprime/logcdf - #14676
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Resolves #3439.
Description
This pull request:
@stdlib/stats/base/dists/betaprime/logcdf, including C headers, GYP/Makefile build configurations, JavaScript/C benchmarks and examples, native unit tests, and README documentation updates. The implementation applies the transformationx/(1+x)before delegating to@stdlib/stats/base/dists/beta/logcdf, mirroring the JavaScript implementation.Related Issues
This pull request has the following related issues:
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stats/base/dists/betaprime/cdf#14675 (betaprime/cdfC implementation) and depends on feat: add C implementation forstats/base/dists/beta/logcdf#13649, which adds the C implementation for@stdlib/stats/base/dists/beta/logcdfthat this package calls. The native addon will not build until feat: add C implementation forstats/base/dists/beta/logcdf#13649 lands ondevelop.isAlmostSameValuewith measured ULP bounds (max observed: 16/394/24; bounds set to 32/768/64 for cross-compiler headroom).Checklist
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Disclosure
This PR was written primarily by Claude Code, using the
stats/base/dists/betaprime/cdfandbetaprime/pdfC implementations as templates; the changes were reviewed and validated locally (native addon built against the #13649 branch, all native tests passing) before submission.@stdlib-js/reviewers