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7b074249f4
* Add tests for host convesion f32/f16 to f8 * Add tests for host convesion from f8 to f32/f16 * Fix UB and corner cases in f32/f16 to/from f8 conversion * There are UBs when very small values are converted to f8: bitshifts can be larger that type width. Using unsigned long long does not help because exponent_diff >= 64 in such cases. This causes that values like 2.117582368e-22 are converted to non-zero f8 in host validation of FMHA tests, test_f8 crashes with segfault in completely irrelevant code like GTest internals or produces non-deterministic results etc. * Fix FNUZ conversion to return NaN for NaN inputs. * Fix compilation error (due to uint8_t << 8) in OCP e5m2 to f16 conversion. * Replace some magic numbers with values from numeric_traits * Build tests only on devices supporting the type