[VectorStores] issue a warning if np.nan or np.inf are in _cosine_similarity argument Matrices

[CasiCode]

• Description: issues a warning if inf and nan are passed as inputs to langchain_core.vectorstores.utils._cosine_similarity
• Issue: _cosine_similarity silently returns 0.0 for vectors with inf or nan #31496
• Dependencies: no external dependencies added, only warnings module imported

[vercel]

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1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
langchain	⬜️ Ignored (Inspect)	Visit Preview		Jun 8, 2025 5:05pm

[codspeed-hq]

CodSpeed Walltime Performance Report

Merging #31532 will not alter performance

_{Comparing CasiCode:cosine-similarity-warnings (73fcc26) with master (ece9e31)}

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

✅ 13 untouched benchmarks

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #31532 will not alter performance

_{Comparing CasiCode:cosine-similarity-warnings (73fcc26) with master (ece9e31)}

Summary

✅ 13 untouched benchmarks

[CasiCode]

@eyurtsev, I'd be very glad if you could check the request please

[CasiCode]

@baskaryan, I would be greatful if you would check the request