Refactor array_api namespace, relying more directly on jax.numpy
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This PR refactors the
jax.experimental.array_apinamespace by removing unnecessary wrappers around already-compliant functions in thejax.numpynamespace, and structuring thearray_apinamespace to pull directly fromjax.numpywhenever possible. After this PR, thearray_apisubmodule contain only:jax.numpyfrom breaking changes, which will be removed when the correspondingjax.numpybehavior is deprecated and made array API compliantjax.numpyand needs inclusion (e.g. introducingjax.numpy.matmul, which already exists injax.numpy.linalg).This PR also adds several
TODOitems describing what is required to cull that portion of thearray_apisubmodule, with the understanding that once it is empty,jax.numpywill be fully compliant. I figured it would be a bit neater to keep theTODOnotes dense in this submodule, rather than spreading them across thejax.numpysubmodule on their corresponding functions. It's also consistent with theTODOs for new functionality or namespace elements.This PR also modifies
jax.numpy.isdtypeto accept_ScalarMetaand other dtype-interpretable inputs.Note that the
array-api-testsissues manyUserWarningsfor the special cases test, as well as for their reporting utilities due to not understanding what@jitwrapped functions are in JAX, so this PR suppresses them in thejax-array-apiworkflow.This PR has been validated against the
array-api-testssuite for version2023.12, usingjax/experimental/array_api/skips.txt-- although it is worth noting that the test suite does not cover everything, e.g. is still missing support forcopyanddevicekeyword tests.cc: @jakevdp