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Commit cdf6a581 authored by Tue Ly's avatar Tue Ly
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[libc] Use intrinsics for x86-64 fma and optimize PolyEval for x86-64 with... 

[libc] Use intrinsics for x86-64 fma and optimize PolyEval for x86-64 with degree 3 & 5 polynomials.

- Use intrinsics for x86-64 fma
- Optimize PolyEval for x86-64 with degree 3 & 5 polynomials.
- There might be a slight loss of accuracy compared to Horner's scheme due to usages of higher powers x^2 and x^3 in the computations.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D115347
parent 2f625ae9
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