From 7e339a02d3b3bf9c7b43ce32fae0880ebd080604 Mon Sep 17 00:00:00 2001
From: Luca Fedeli <luca.fedeli@cea.fr>
Date: Fri, 14 Feb 2025 04:23:14 +0100
Subject: [PATCH] WarpX class: simplify return type of get_spectral_solver_fp
 using `auto&` (#5656)

This PR simplifies the return type of a method of the WarpX class by
replacing:
```
#   ifdef WARPX_DIM_RZ
        SpectralSolverRZ&
#   else
        SpectralSolver&
#   endif
```
with
```
auto&
```
---
 Source/WarpX.H | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/Source/WarpX.H b/Source/WarpX.H
index a1595210389..ce4a846eace 100644
--- a/Source/WarpX.H
+++ b/Source/WarpX.H
@@ -1005,13 +1005,7 @@ public:
     void PSATDSubtractCurrentPartialSumsAvg ();
 
 #ifdef WARPX_USE_FFT
-
-#   ifdef WARPX_DIM_RZ
-        SpectralSolverRZ&
-#   else
-        SpectralSolver&
-#   endif
-            get_spectral_solver_fp (int lev) {return *spectral_solver_fp[lev];}
+    auto&  get_spectral_solver_fp (int lev) {return *spectral_solver_fp[lev];}
 #endif
 
     FiniteDifferenceSolver * get_pointer_fdtd_solver_fp (int lev) { return m_fdtd_solver_fp[lev].get(); }