[PATCH] D72685: [PowerPC] Exploit VSX rounding instrs for rint

[Kai Luo via Phabricator via llvm-commits]

lkail added a comment.

> Is that specified by any doc/spec? Thanks.

I found it in `man rint` on linux, which writes

  RETURN VALUE
         These functions return the rounded integer value.
  
         If x is integral, +0, -0, NaN, or infinite, x itself is returned.


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