LibGridXC library
-----------------

LibGridXC provides routines to calculate the exchange and correlation
energy and potential in spherical (i.e. an atom) or periodic systems,
using a variety of LDA and GGA functionals, as well as the van der
Waals DFT functionals of Dion et al (PRL 92, 246401 (2004)), Lee et al
(PRB 82, 081101 (2010)), Klimes et al (JPCM 22, 022201 (2009)), and
Vydrov and VanVoorhis (JCP 133, 244103 (2010)) implemented as
described by Roman-Perez and Soler (PRL 103, 096102 (2009))

An interface to the Libxc library is also available.

Documentation, generated by the FORD utility from the source and from
the material in docs/pages, is available in html form
[here](https://siesta-project.github.io/gridxc-docs/page/index.html). It can
also be generated locally.

The INSTALL file contains basic compilation instructions.

Originally (as SiestaXC), this library was part of the SIESTA
distribution. SiestaXC was coded by Jose Soler. The library is now
maintained by Alberto Garcia.




