                       =========
                       WANNIER90
                       =========

 The Maximally-Localised Generalised Wannier Functions Code

This directory containes the subroutines for post-processing 
a pwscf calculation for use with Wannier90.

In general, the releases of quantum-espresso and those of 
Wannier90 are out of sync. Therefore, we provide here a copy 
of the post-processing routine that is compatible with this
release of Wannier90 and a particular release of quantum-espresso.

====
v6.0
====

************************************************************************
** NOTE! this works only for Quantum ESPRESSO                          *
** version 6.0                                                         *
** Later versions v6.x.x should have the most up-to-date version       *
** of pw2wannier90.f90 already included in the Quantum ESPRESSO        *
** distribution.                                                       *
************************************************************************

This file also includes the new features added in Wannier90 2.1
related to symmetry-adapted Wannier functions.

Within the sub-directory v6.0 you will find the file pw2wannier90.f90

Copy pw2wannier90.f90 to the PP/src directory of the quantum ESPRESSO
distribution, replacing the file of the same name that is already there.
Then you should compile pw2wannier90.x as normal.

======
v5.1.x
======
The Quantum ESPRESSO releases of version 5.1.x already contain
the most up-to-date version of pw2wannier90.x. No special 
action is needed.

======
v5.0.x
======

************************************************************************
** NOTE! this works only for Quantum ESPRESSO                          *
** versions 5.0.0, 5.0.1, 5.0.2 and 5.0.3.                             *
** From version 5.1.0, the most up-to-date version of pw2wannier90.f90 *
** is already included in the Quantum ESPRESSO distribution.           *
************************************************************************

This file also includes the new features required by some
modules added in Wannier90 2.0, like spinor-projections,
and the evaluation of the matrix elements needed for the
calculation of spin and orbital magnetization.

Within the sub-directory v5.0 you will find the file pw2wannier90.f90

Copy pw2wannier90.f90 to the PP/src directory of the quantum ESPRESSO
distribution, replacing the file of the same name that is already there.
Then you should compile pw2wannier90.x as normal.



===================
versions before 5.0
===================

Within, e.g., the sub-directory v3.2.3 you will find two files:

1. pw2wannier90.f90 should be copied to the "PP" directory
of v3.2.3 of the quantum-espresso distribution, replacing the 
file of the same name that is already there,

2. wannier.f90 that should be copied to the "Modules" directory
of v3.2.3 of the quantum-espresso distribution, replacing the 
file of the same name that is already there. (note after v5.0
this wannier.f90 is not needed or present)

Then you should compile pw2wannier90.x as normal.
