Re: [boost] New library proposal: Autodiff

Subject: Re: [boost] New library proposal: Autodiff
From: Peter Dimov (lists_at_[hidden])
Date: 2018-12-19 20:44:48

John Maddock wrote:

> I get that, and haven't looked in detail at the code yet, but for the 
> record, for Math heavy code, "if constexpr" is probably more useful than 
> anything else in C++11 and 14....

In the specific case of

https://github.com/pulver/autodiff/blob/master/include/boost/math/autodiff.hpp

as far as I can see you can just drop the `constexpr` part from `if 
constexpr` on pre-17 compilers and everything would work. But that's just 
from a quick glance, I haven't tried it.