From 045c0dc29fc31a8d3f15da8b3130dbc4706ea581 Mon Sep 17 00:00:00 2001
From: Yann Herklotz <git@yannherklotz.com>
Date: Thu, 13 Aug 2020 23:24:40 +0100
Subject: Add modified polybench benchmarks

---
 .../polybench-syn/linear-algebra/solvers/durbin.c  | 102 +++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 benchmarks/polybench-syn/linear-algebra/solvers/durbin.c

(limited to 'benchmarks/polybench-syn/linear-algebra/solvers/durbin.c')

diff --git a/benchmarks/polybench-syn/linear-algebra/solvers/durbin.c b/benchmarks/polybench-syn/linear-algebra/solvers/durbin.c
new file mode 100644
index 0000000..677c23c
--- /dev/null
+++ b/benchmarks/polybench-syn/linear-algebra/solvers/durbin.c
@@ -0,0 +1,102 @@
+/**
+ * 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
+ */
+/* durbin.c: this file is part of PolyBench/C */
+
+
+#define plus(i) i = i + ONE
+/* Include polybench common header. */
+static
+void init_array (int n,
+   int r[ 40 + 0])
+{
+  int ONE = 1;
+  int i, j;
+
+  for (i = 0; i < n; plus(i))
+    {
+      r[i] = (n+ONE-i);
+    }
+}
+
+
+
+static
+int print_array(int n,
+   int y[ 40 + 0])
+
+{
+  int ONE = 1;
+  int i;
+  int res = 0;
+
+  for (i = 0; i < n; plus(i)) {
+    res  += y[i];
+  }
+  return res;
+}
+
+static
+void kernel_durbin(int n,
+     int r[ 40 + 0],
+     int y[ 40 + 0])
+{
+ int z[40];
+ int alpha;
+ int beta;
+ int sum;
+
+  int ONE = 1;
+ int i,k;
+
+#pragma scop
+ y[0] = -r[0];
+ beta = 1;
+ alpha = -r[0];
+
+ for (k = 1; k < n; plus(k)) {
+   beta = (ONE-alpha*alpha)*beta;
+   sum = 0;
+   for (i=0; i<k; plus(i)) {
+      sum += r[k-i-ONE]*y[i];
+   }
+   alpha = - (r[k] + sum)/beta;
+
+   for (i=0; i<k; plus(i)) {
+      z[i] = y[i] + alpha*y[k-i-ONE];
+   }
+   for (i=0; i<k; plus(i)) {
+     y[i] = z[i];
+   }
+   y[k] = alpha;
+ }
+#pragma endscop
+
+}
+
+
+int main()
+{
+
+  int n = 40;
+
+
+  int r[40 + 0]; 
+  int y[40 + 0]; 
+
+
+  init_array (n, r);
+
+  kernel_durbin (n,
+   r,
+   y);
+
+  return print_array(n, y);
+
+}
-- 
cgit