From aa986aacbb80e9f92f77d65de74ba5051054eac7 Mon Sep 17 00:00:00 2001
From: Yann Herklotz <git@yannherklotz.com>
Date: Sun, 11 Jul 2021 01:19:52 +0200
Subject: Add divider benchmarks

---
 benchmarks/polybench-syn-div/stencils/fdtd-2d.c | 134 ++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 benchmarks/polybench-syn-div/stencils/fdtd-2d.c

(limited to 'benchmarks/polybench-syn-div/stencils/fdtd-2d.c')

diff --git a/benchmarks/polybench-syn-div/stencils/fdtd-2d.c b/benchmarks/polybench-syn-div/stencils/fdtd-2d.c
new file mode 100644
index 0000000..2c5cdb2
--- /dev/null
+++ b/benchmarks/polybench-syn-div/stencils/fdtd-2d.c
@@ -0,0 +1,134 @@
+/**
+ * This version is stamped on May 10, 2016
+ *
+ * Contact:
+ *   Louis-Noel Pouchet <pouchet.ohio-state.edu>
+ *   Tomofumi Yuki <tomofumi.yuki.fr>
+ *
+ * Web address: http://polybench.sourceforge.net
+ */
+/* fdtd-2d.c: this file is part of PolyBench/C */
+
+#ifndef SYNTHESIS
+#include <stdio.h>
+#endif
+
+#define plus(i) i = i + ONE
+static
+void init_array (int tmax,
+   int nx,
+   int ny,
+   int ex[ 20 + 0][30 + 0],
+   int ey[ 20 + 0][30 + 0],
+   int hz[ 20 + 0][30 + 0],
+   int _fict_[ 20 + 0])
+{
+  int i, j;
+  int ONE = 1;
+
+  for (i = 0; i < tmax; plus(i))
+    _fict_[i] = (int) i;
+  for (i = 0; i < nx; plus(i))
+    for (j = 0; j < ny; plus(j))
+    {
+      ex[i][j] = ((i*(j+1)) / nx);
+      ey[i][j] = ((i*(j+2)) / ny);
+      hz[i][j] = ((i*(j+3)) / nx);
+    }
+      
+}
+
+
+
+
+static
+int print_array(int nx,
+   int ny,
+   int ex[ 20 + 0][30 + 0],
+   int ey[ 20 + 0][30 + 0],
+   int hz[ 20 + 0][30 + 0])
+{
+  int i, j;
+  int res = 0;
+  int ONE = 1;
+
+  for (i = 0; i < nx; plus(i))
+    for (j = 0; j < ny; plus(j)) {
+      res ^= ex[i][j];
+    }
+  for (i = 0; i < nx; plus(i))
+    for (j = 0; j < ny; plus(j)) {
+      res ^= ey[i][j];
+    }
+  for (i = 0; i < nx; plus(i))
+    for (j = 0; j < ny; plus(j)) {
+      res ^= hz[i][j];
+    }
+
+#ifndef SYNTHESIS
+  printf("finished: %u\n", res);
+#endif
+
+  return res;
+}
+
+
+static
+void kernel_fdtd_2d(int tmax,
+      int nx,
+      int ny,
+      int ex[ 20 + 0][30 + 0],
+      int ey[ 20 + 0][30 + 0],
+      int hz[ 20 + 0][30 + 0],
+      int _fict_[ 20 + 0])
+{
+  int t, i, j;
+  int ONE = 1;
+
+ for(t = 0; t < tmax; t=t+ONE)
+    {
+      for (j = 0; j < ny; plus(j))
+ ey[0][j] = _fict_[t];
+      for (i = 1; i < nx; plus(i))
+ for (j = 0; j < ny; plus(j))
+   ey[i][j] = ey[i][j] - ((hz[i][j]-((hz[i-ONE][j])>>1)));
+      for (i = 0; i < nx; plus(i))
+ for (j = 1; j < ny; plus(j))
+   ex[i][j] = ex[i][j] - ((hz[i][j]-((hz[i][j-ONE])>>1)));
+      for (i = 0; i < nx - ONE; plus(i))
+ for (j = 0; j < ny - ONE; plus(j)){
+   int tmp = (ex[i][j+ONE] - ex[i][j] +
+           ey[i+ONE][j] - ey[i][j]);
+   hz[i][j] = hz[i][j] - (tmp >> 1) - (tmp >> 2);
+           }
+    }
+
+}
+
+
+int main()
+{
+
+  int tmax = 20;
+  int nx = 20;
+  int ny = 30;
+
+
+  int ex[20 + 0][30 + 0]; 
+  int ey[20 + 0][30 + 0]; 
+  int hz[20 + 0][30 + 0]; 
+  int _fict_[20 + 0];     
+
+  init_array (tmax, nx, ny,
+       ex,
+       ey,
+       hz,
+       _fict_);
+  kernel_fdtd_2d (tmax, nx, ny,
+    ex,
+    ey,
+    hz,
+    _fict_);
+
+  return print_array(nx, ny, ex, ey, hz);
+}
-- 
cgit