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Allow complex values in Linear layers - #141
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August 15, 2026 16:55
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Fixes #127.
Summary
Allow
Linearlayers to accept complex-valued inputs and outputs by using NumPy/JAX'sinexactabstract dtype rather than restricting structure checks to floating-point values.ArraySpecdtype fromjnp.floatingtojnp.inexactLinearregression testWhy
JAX linear algebra supports complex values, but Penzai's structure declaration rejected them before the layer could run.
jnp.inexactis the abstract dtype family covering both floating and complex values.Testing
Targeted linear/affine tests passed on the branch: 12 tests. Formatting checks also passed.