3 files changed, 23 insertions, 2 deletions
diff --git a/Source/FieldSolver/SpectralSolver/SpectralFieldData.H b/Source/FieldSolver/SpectralSolver/SpectralFieldData.H
index 6a2446981..01ca11083 100644
--- a/Source/FieldSolver/SpectralSolver/SpectralFieldData.H
+++ b/Source/FieldSolver/SpectralSolver/SpectralFieldData.H
@@ -1,7 +1,7 @@
 #ifndef WARPX_SPECTRAL_FIELD_DATA_H_
 #define WARPX_SPECTRAL_FIELD_DATA_H_
 
-#include <WarpX_Complex.H>
+#include <WarpX_ComplexForFFT.H>
 #include <SpectralKSpace.H>
 #include <AMReX_MultiFab.H>
 
diff --git a/Source/FieldSolver/SpectralSolver/SpectralKSpace.H b/Source/FieldSolver/SpectralSolver/SpectralKSpace.H
index ae7124b2e..a73356dca 100644
--- a/Source/FieldSolver/SpectralSolver/SpectralKSpace.H
+++ b/Source/FieldSolver/SpectralSolver/SpectralKSpace.H
@@ -1,7 +1,7 @@
 #ifndef WARPX_SPECTRAL_K_SPACE_H_
 #define WARPX_SPECTRAL_K_SPACE_H_
 
-#include <WarpX_Complex.H>
+#include <WarpX_ComplexForFFT.H>
 #include <AMReX_BoxArray.H>
 #include <AMReX_LayoutData.H>
 
diff --git a/Source/FieldSolver/SpectralSolver/WarpX_ComplexForFFT.H b/Source/FieldSolver/SpectralSolver/WarpX_ComplexForFFT.H
new file mode 100644
index 000000000..43c7a1950
--- /dev/null
+++ b/Source/FieldSolver/SpectralSolver/WarpX_ComplexForFFT.H
@@ -0,0 +1,21 @@
+#ifndef WARPX_COMPLEXFORFFT_H_
+#define WARPX_COMPLEXFORFFT_H_
+
+#include <WarpX_Complex.H>
+
+// Check the complex type on GPU/CPU
+#ifdef AMREX_USE_GPU
+
+#include <cufft.h>
+static_assert( sizeof(Complex) == sizeof(cuDoubleComplex),
+    "The complex types in WarpX and cuFFT do not match.");
+
+#else
+
+#include <fftw3.h>
+static_assert( sizeof(Complex) == sizeof(fftw_complex),
+    "The complex types in WarpX and FFTW do not match.");
+
+#endif
+
+#endif //WARPX_COMPLEXFORFFT_H_