Diff: samples/matrix.nut

Revision:

0:97a4f8cc534c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/matrix.nut	Tue Dec 16 10:20:34 2014 +0000
@@ -0,0 +1,44 @@
+/*
+*
+* Original Javascript version by David Hedbor(http://www.bagley.org/~doug/shootout/)
+*
+*/
+local SIZE=30;
+
+function mkmatrix(rows, cols) {
+  local i, j, count = 1;
+  local m = []; m.resize(rows);
+  for (i = 0; i < rows; i+=1) {
+    m[i] = [];m[i].resize(cols)
+    for (j = 0; j < cols; j+=1) {
+      m[i][j] = count+=1;
+    }
+  }
+  return m;
+}
+
+function mmult(rows, cols,  m1, m2, m3) {
+  local i, j, k, val;
+  for (i = 0; i < rows; i+=1) {
+    for (j = 0; j < cols; j+=1) {
+      val = 0;
+      for (k = 0; k < cols; k+=1) {
+	val += m1[i][k] * m2[k][j];
+      }
+      m3[i][j] = val;
+    }
+  }
+  return m3;
+}
+
+local n = vargv.len()!=0?vargv[0].tointeger():1
+
+local m1 = mkmatrix(SIZE, SIZE);
+local m2 = mkmatrix(SIZE, SIZE);
+local mm = mkmatrix(SIZE, SIZE);
+
+for (local i = 0; i < n; i+=1) {
+  mmult(SIZE, SIZE, m1, m2, mm);
+}
+
+print(mm[0][0]+" "+mm[2][3]+" "+mm[3][2]+" "+mm[4][4]);
\ No newline at end of file