On Tue, 27 Sep 2016, Jonathan Wakely wrote: > This adds the new 3D std::hypot() functions. This implementation seems > to be faster than the naïve sqrt(x*x + y*y + z*z) implementation, or > hypot(hypot(x, y), z), and should be a bit more accurate at very large > or very small values due to reducing the arguments by the largest one. > Improvements welcome though, as this is not my forte.
Should I take it from this implementation that C++ is not concerned by certain considerations that would arise for C: spurious underflow exceptions from the scaling when some arguments much larger than others; spurious "invalid" exceptions from the comparisons when any argument is (quiet) NaN; handling of mixed (quiet) NaN and Inf arguments (where ISO C Annex F has Inf returned, not NaN)? -- Joseph S. Myers jos...@codesourcery.com
