Commits on Sep 28, 2021

1. BUG: np.tan(np.inf) test failure …

   Numpy has a test failure where `np.tan(np.inf)` is not raising "invalid". The bug is due to an underlying bug in Apple's Libm.  The bug is only present on arm64 and does not affect x86_64.
   
   The changes here apply to sin, cos, and tan. If the input is a non-finite value, then return `(x - x)`, which will raise "invalid" for `x=INFINITY` as well as return `NAN` for both `INFINITY` and `NAN` as input.
   
   Testing:
   (Note, the testing below is on top of another branch that fixes divide-by-zero failures in reciprocal)
   
   Before change:
   ```
   FAILED numpy/core/tests/test_umath.py::TestSpecialFloats::test_tan - AssertionError: FloatingPointError not raised by tan
   1 failed, 15589 passed, 302 skipped, 1268 deselected, 31 xfailed, 3 xpassed in 70.99s (0:01:10)
   ```
   
   After change:
   ```
   15590 passed, 302 skipped, 1268 deselected, 31 xfailed, 3 xpassed in 71.38s (0:01:11)
   ```

   

   Developer-Ecosystem-Engineering authored and charris committed Sep 28, 2021
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