* Make check_dtypes, atol, and rtol keyword-only arguments in jax.test_util APIs.
Default to check_dtypes=True.
Remove explicit usages of check_dtypes=True from tests. This mostly just removes visual noise from tests. Testing for exact type equality is the sensible default, although there are cases where opting out makes sense.
No functional changes intended.
* Fix a number of lax reference implementations to preserve types.
* fix issue 3165 if round half up behaviour is desired
* add test for round half
* fix integer array input and and add to test
* fix truncated integer output
* match input and output dtypes
* fix asymmetric rounding and extend test
* use lax for rounding
* Improve JAX test PRNG APIs to fix correlations between test cases.
In #2863, we observed that we were missing gradient problems because the random test cases being generated were too similar because they were formed with identically seeded PRNGs. This change updates the test_util.rand_...() functions to take an explicit numpy.random.RandomState, and adds a rng() method to JaxTestCase to form a RandomState seeded on the test case name.
This gives the following properties:
* different test cases receive different seeds
* PRNG seeding is deterministic and independent of execution order and sharding.
* PRNG seeding is deterministic across runs.
* Fix some failing tests.
* Fix more test failures.
Simplify ediff1d implementation and make it more permissive when casting.
* Relax test tolerance of laplace CDF test.
* Add support for scipy.ndimage.map_coordinates with order=1
Higher dimensional interpolation will be a bit trickier, but this should
already be useful.
* move around docstring
* dtype fixes, more tests
* fixup float32 tests
* Handle order=0
* Tests for errors from map_coordinates
