fix compilation issue: error: use of undeclared identifier 'ceil' 'floor'
===================================================================
--- rocFFT-rocm-5.0.2.orig/library/src/device/generator/stockham_gen_base.h
+++ rocFFT-rocm-5.0.2/library/src/device/generator/stockham_gen_base.h
@@ -20,6 +20,7 @@
 
 #pragma once
 #include "stockham_gen.h"
+#include <math.h>
 
 // Base class for stockham kernels.  Subclasses are responsible for
 // different tiling types.