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Diffstat (limited to 'results/scraper/fex/173')
| -rw-r--r-- | results/scraper/fex/173 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/results/scraper/fex/173 b/results/scraper/fex/173 new file mode 100644 index 000000000..200abd850 --- /dev/null +++ b/results/scraper/fex/173 @@ -0,0 +1,12 @@ +Bit accurate Transcendental support +This is a long term goal. +Currently we don't offer bit accurate transcendental instructions. +Reciprocal and reciprocal square root instructions have a fairly large range for their precision support. +These are currently implemented with float divisions to ensure all of the CPU backends match results and have same unit test results. + +These precision differences have the fun quirk that usually something like the reciprocal of 1.0f results in a result that isn't 1.0f even. + +We should have support for a few modes once this gets worked on. +1) Bit accurate representation that matches *SOME* known hardware +2) Most accurate representation (What we have now) +3) Accuracy that falls within x86 precision requirements, but doesn't match any known hardware (In case any device supports less accurate results that are still within x86 spec) \ No newline at end of file |