[PATCH] Define midpoint and lerp functions for C++20 (P0811R3)

[Jonathan Wakely]

On 25/06/19 21:55 +0200, Rainer Orth wrote:
>Hi Jonathan,
>
>>>Doh, I looked in <cmath> and saw that we get std::abs(double) from the
>>>Solaris headers, and then forgot and used it anyway.
>>>
>>>I'll replace that right away, thanks.
>>
>> Should be fixed at r272653.
>>
>> Tested x86_64-linux, committed to trunk.
>
>it did indeed.
>
>Thanks a lot for the super-quick fix.

I already had the fix in a branch, so should never have committed the
broken version in the first place!