This is the library ScaFaCoS ("Scalable Fast Coulomb Solver").
ScaFaCoS is a parallel library for solving the Coulomb problem. It
provides various state-of-the-art methods with a common interface.
Further details on the project, downloads, online documentation
as well as support contact data are given on the project's web page
www.scafacos.de
After invoking 'make doc', the User's Guide of the ScaFaCoS
library is found in the file
doc/manual.pdf
The Git repository at https://github.com/scafacos/scafacos.git uses
submodules to integrate the sources of the PFFT and PNFFT libraries.
To clone the entire ScaFaCoS repository including the submodule sources,
use the command
git clone --recursive https://github.com/scafacos/scafacos.git
or to update the missing submodules sources (i.e., after normal cloning)
git submodule update --init --recursive