Fix compilation errors

1 files changed, 15 insertions, 0 deletions

diff --git a/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H b/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H
index 9258fdff4..5d160d865 100644
--- a/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H
+++ b/Source/FieldSolver/FiniteDifferenceSolver/FiniteDifferenceAlgorithms/CylindricalYeeAlgorithm.H
@@ -19,6 +19,21 @@ struct CylindricalYeeAlgorithm {
         stencil_coefs_z[0] = 1./cell_size[2];  // 1./dz
     }
 
+    /** Applies the differential operator `1/r * d(rF)/dr`,
+     * where `F` is on a *nodal* grid in `r`
+     * and the differential operator is evaluated on *cell-centered* grid.
+     * The input parameter `r` is given at the cell-centered position*/
+    AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
+    static amrex::Real UpwardDrr_over_r(
+        amrex::Array4<amrex::Real> const& F,
+        amrex::Real const r, int const dr,
+        amrex::Real const* coefs_r, int const n_coefs_r,
+        int const i, int const j, int const k, int const comp ) {
+
+        amrex::Real inv_dr = coefs_r[0];
+        return inv_dr*( (r+0.5*dr)*F(i+1,j,k,comp) - (r-0.5*dr)*F(i,j,k,comp) );
+    };
+
     AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
     static amrex::Real UpwardDr(
         amrex::Array4<amrex::Real> const& F,