math/cmplx: Tan incorrect on s390x for large arguments #37854
s390x fails the tests for Tan with large arguments due to incorrect argument reduction in the trigonometric routines for the base math packages.
I think the s390x assembly implementations need to be fixed or they should just revert to the pure go versions for large arguments.
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s390x has inaccurate range reduction for the assembly routines in math so these tests are diabled until these are corrected. Updates #37854 Change-Id: I1e26acd6d09ae3e592a3dd90aec73a6844f5c6fe Reviewed-on: https://go-review.googlesource.com/c/go/+/223457 Run-TryBot: Brian Kessler <email@example.com> TryBot-Result: Gobot Gobot <firstname.lastname@example.org> Reviewed-by: Rob Pike <email@example.com>