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ef88434286
Don't set fast-math for the SIMD operations we set it for previously Instead of `fast-math`. `fast-math` implies things like functions not being able to accept as an argument or return as a result, say, `inf` which made these functions confusingly named or behaving incorrectly, depending on how you interpret it. It seems that the intended behaviour was to set a `afn` flag instead. In doing so we also renamed the intrinsics to say `_approx` so that it is clear these are not precision oriented and the users can act accordingly. Fixes #84268