[geos-devel] double double

Paul Ramsey pramsey at cleverelephant.ca
Fri Dec 7 15:28:54 PST 2018

Mats, what ever happened to:


I'm just coming up against some stuff in the JTS commit log that expects
double double and I see you've done this work already some years ago, but
it's not committed that I can see. JTS changed over some code to use DD
exclusively about a year ago, so this is a case where porting has caught up
to need.

Were there any substantial problems w/ your PR? If not I'm "just" going to
try and rebase it and use it as the basis for going ahead.

(It seems like the state-of-the-art would eventually be to use the "long
double" type, which has an implementation in GCC, but does not yet have one
in clang, in hopes that by being close to the metal we'd eventually also
start to reap performance gains as the silicon adds instructions to improve
long double calculations. ???)

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