Andrzej Janik 3746079b1a Assorted instruction fixes (#423)
This fixes transcendentals and some other buggy instructions exposed by `ptx_tests` (abs, neg). Add (slow - hardware limitation) tanh.
Only two remaining incorrect instructions are div and sqrt with non-default rounding, but this commit is already bloated enough
2025-07-23 15:50:35 -07:00
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