Re: purity question

[Ola Fosheim Grøstad via Digitalmars-d-learn]

On Monday, 29 May 2017 at 08:49:07 UTC, ketmar wrote:
pure. and while various functions in std.math, for example, are 
marked `pure`, they aren't too.

Out of curiosity, which functions in std.math aren't "pure" in 
the D sense?