[R-pkg-devel] Use of long double in configuration

[Tim Taylor]

Is it correct to say that R's conditional use of long double is around ensuring things work on platforms which have 'long double' identical to 'double' types, as opposed to there being an odd compiler targeted that does not even have any concept of 'long double' type?

As background this was motivated by a query raised in the matrixStats package:
https://github.com/HenrikBengtsson/matrixStats/issues/278