From 4022e5c95210631e4aceb08eaf9d9071aa5aefc4 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.001@gmail.com>
Date: Tue, 15 Sep 2026 08:16:43 +0800
Subject: Set up a git repo

---
 tests/performance/13_stencil1.sy | 63 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 tests/performance/13_stencil1.sy

(limited to 'tests/performance/13_stencil1.sy')

diff --git a/tests/performance/13_stencil1.sy b/tests/performance/13_stencil1.sy
new file mode 100644
index 0000000..4e7e16e
--- /dev/null
+++ b/tests/performance/13_stencil1.sy
@@ -0,0 +1,63 @@
+const int width = 1024;
+const int height = 1024;
+int image_in[width * height];
+int image_out[width * height];
+
+int cutout(int val){
+    if(val < 0){
+        val = 0;
+    }
+    else{
+        if(val > 255){
+            val = 255;
+        }
+    }
+    return val;
+}
+
+int main(){
+    int i;
+    int j;
+    int num = getarray(image_in);
+
+    starttime();
+    j = 1;
+    while(j < width - 1){
+        i = 1;
+        while(i < height - 1){
+            int im1jm1 =(i-1)*width + j-1;
+            int im1j   =(i-1)*width + j;
+            int im1jp1 =(i-1)*width + j+1;
+            int ijm1   =(i  )*width + j-1;
+            int ij     =(i  )*width + j;
+            int ijp1   =(i  )*width + j+1;
+            int ip1jm1 =(i+1)*width + j-1;
+            int ip1j   =(i+1)*width + j;
+            int ip1jp1 =(i+1)*width + j+1;
+            int val = 8*image_in[ij] - image_in[im1jm1] - image_in[im1j] - image_in[im1jp1] -image_in[ijm1] - image_in[ijp1] - image_in[ip1jm1] - image_in[ip1j] - image_in[ip1jp1];
+
+            image_out[i*width + j] = cutout(val);
+            i = i + 1;
+        }
+        j = j + 1;
+    }
+
+    i = 0;
+    while(i < height){
+        image_out[i * width] = image_in[i * width];
+        image_out[i * width + width - 1] = image_in[i * width + width - 1];
+        i = i + 1;
+    }
+
+    j = 0;
+    while(j < width){
+        image_out[j] = image_in[j];
+        image_out[(height - 1) * width + j] = image_in[(height - 1) * width + j];
+        j = j + 1;
+    }
+
+    stoptime();
+
+    putarray(width * height, image_out);
+    return num;
+}
\ No newline at end of file
-- 
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