Generalize logp test comparisons to support rtol/atol

[ccaprani]

Summary

Generalize logp, logcdf, logccdf, icdf test comparisons from assert_almost_equal to assert_allclose with configurable atol and rtol.

Changes

• Switch from assert_almost_equal to assert_allclose in all check functions
• Add rtol and atol parameters to all check functions
• Maintain backward compatibility via decimal parameter (maps to atol = 10**(-decimal), rtol = 1e-10)
• Use absolute tolerance as primary (MCMC invariant to additive constants per @Armavica)
• Set n_samples=-1 for deterministic tests (per @ricardoV94)

Defaults

• atol: 1e-6 (float64), 1e-3 (float32) — primary tolerance
• rtol: 1e-10 — numerical stability for very large values

Replaces closed #6159.

[read-the-docs-community]

Documentation build overview

📚 pymc | 🛠️ Build #33027636 | 📁 Comparing 69fcbdb against latest (971800b)

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2 files changed

± glossary.html
± _modules/pymc/testing.html