c-routine for a 16-byte integer array taken verbatim from the
optimized c version reported in
https://en.wikipedia.org/wiki/Fletcher%27s_checksum#Optimizations
except for the fact that the data size is not an argument of the
function but rather the address of its location is passed, as this
is what a fortran call passes as reference.
The type of these variables is also defined as uint32_t
instead of size_t because this is what fortran implicitely does.
Fortran interfaces to a generic subroutine fletcher32_cksum also
defined in UtilXlib/fletcher32_mod.f90
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@13824 c92efa57-630b-4861-b058-cf58834340f0
removal of old-style fortran to C binding and of configure hacks. The
fortran timing functions are now f_tcpu and f_wall, with obvious meaning
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@13631 c92efa57-630b-4861-b058-cf58834340f0
basic operations: error handling, timing clocks, interfaces to basic mpi
calls, find free units...
These routines are moved from Modules and dependencies to other modules
are removed.
MANY files are updated to comply with the move.
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@13629 c92efa57-630b-4861-b058-cf58834340f0
US variable qq renamed qq_nt and a new variable qq_na added
because in real space the integral may depend (slightly) on
the atomic position and an atomic value is needed to compute
exactly normalizable wfc.
Whenever realspace tricks are not used qq_nt is used.
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@13604 c92efa57-630b-4861-b058-cf58834340f0
make.depend are now in the CVS and shouldn't be updated unless
needed. Configure no longer runs makedeps.sh. Type 'make depend'
to regenerate dependencies.
Remove all */make.depend files before updating!
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@3409 c92efa57-630b-4861-b058-cf58834340f0
Paolo Giannozzi