LIGGGHTS bug - move/mesh rotate/variable cannot accept store/state compute variable

(by DaveK Jan Evangelista Purkyně University in Ústí nad Labem Faculty of Science +420 47528 3306)

LIGGGHTS bug - move/mesh rotate/variable cannot accept store/state compute variable

When using variable input like

fix saveval all store/state 1 v_savevaltemp
compute savevalsum all reduce sum f_saveval
variable omeg equal c_savevalsum

fix rotatemesh all move/mesh mesh inputmesh rotate/variable origin 0 0 0 axis 0 0 1 omega v_omeg

ends up with error

Proposed change:

two lines - marked with *->*

LIGGGHTS-PUBLIC/src/mesh_mover_rotation.cpp

MeshMoverRotateVariable::MeshMoverRotateVariable(LAMMPS *lmp,AbstractMesh *_mesh, FixMoveMesh *_fix_move_mesh,
const char * const * const arg, const int narg) :
...
omega_ = input->variable->compute_equal(myvar1_); *->* omega_ = 0.0; //input->variable->compute_equal(myvar1_); - similarly to MeshMoverLinearVariable
totalPhi_ = 0.;

add_reference_point(point_);
}

void MeshMoverRotateVariable::setup()
{
// check if variable still exists
myvar1_ = input->variable->find(var1str_);
if (myvar1_ < 0)
error->all(FLERR,"Variable name 1 for fix move/mesh rotate dynamic does not exist");

// *->* omega_ = input->variable->compute_equal(myvar1_); // add evaluation - similarly to MeshMoverLinearVariable
}