[libc-commits] [PATCH] D133400: [libc][math] Implement asinf function correctly rounded for all rounding modes.

[Kirill Okhotnikov via Phabricator via libc-commits]

orex added a comment.

Good job, Tue!

I have an optional suggestion. You can use formula
`asin(x)=1/2*acos(1-2*x^2)`
and, of course,
`acos(x)=pi/2-asin(x)`
for cases where `|x|>=0.5` Probably it can be much faster than `sqrt`.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D133400