aaron.ballman added inline comments.

================
Comment at: docs/clang-tidy/checks/readability-magic-numbers.rst:61-63
+configuration for accepted floating point values, primarily because most
+floating point comparisons are not exact, and some of the exact ones are not
+portable.
----------------
0x8000-0000 wrote:
> aaron.ballman wrote:
> > I am curious to know how true this is. You got some data for integer values 
> > and reported it, but I'm wondering if you've tried the same experiment with 
> > floating-point numbers?
> The problem with the floating point numbers as text is: they need to be 
> parsed both from the configuration and from the source code _then_ compared. 
> What is an acceptable epsilon? I don't know. Is the same epsilon acceptable 
> on all source code? I don't know.
Yeah, I'm not too worried about the situations in which the epsilon matters. 
I'm more worried that we'll see a lot of 1.0, 2.0 floating-point literals where 
the floating-point value is a nice, round, easy-to-represent number but users 
have no way to disable this diagnostic short of `const float Two = 2.0f;`


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D49114



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