google/jax
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- Opened on October 21, 2026
- Status Merged
- Commit count 1 with first commit October 22, 2026
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[JAX] Fix jax.scipy.special.loggamma nan at zero (jax-ml/jax#38240)
[JAX] Fix jax.scipy.special.loggamma nan at zero (jax-ml/jax#38240)
Problem:
In jax-ml/jax#38240 (https://github.com/jax-ml/jax/issues/38240), jax.scipy.special.loggamma incorrectly returns nan at x=0.0 and x=-0.0 due to a strict x > 0 filter, whereas SciPy returns inf.
Solution:
Changed the filter in loggamma to use x >= 0 instead of x > 0 to correctly return inf at 0.0 and -0.0. Added a specific boundary value test in lax_scipy_special_functions_test.py.
PR was closed without comments.