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tasks/tbb/belan_vadim_mat_fox_tbb/src/ops_tbb.cpp

@@ -106,22 +106,17 @@ bool FoxBlockedParallel::pre_processing() {
 bool FoxBlockedParallel::run() {
   internal_order_test();
 
-  tbb::parallel_for(tbb::blocked_range<int>(0, static_cast<int>(A.size()), block_size),
-    [this](const tbb::blocked_range<int>& range) {
-      for (int ii = range.begin(); ii < range.end(); ii += block_size) {
-        for (std::vector<double>::size_type jj = 0; jj < B[0].size(); jj += block_size) {
-          for (std::vector<double>::size_type k = 0; k < A[0].size(); ++k) {
-            for (int i = ii; i < std::min(ii + block_size, static_cast<int>(A.size())); ++i) {
-              for (std::vector<double>::size_type j = jj;
-                   j < std::min(jj + block_size, B[0].size()); ++j) {
-                C[i][j] += A[i][k] * B[k][j];
-              }
-            }
+  tbb::parallel_for(
+    tbb::blocked_range2d<std::vector<double>::size_type>(0, A.size(), block_size, 0, B[0].size(), block_size),
+    [&](const tbb::blocked_range2d<std::vector<double>::size_type>& r) {
+      for (std::vector<double>::size_type k = 0; k < A[0].size(); ++k) {
+        for (std::vector<double>::size_type i = r.rows().begin(); i < r.rows().end(); ++i) {
+          for (std::vector<double>::size_type j = r.cols().begin(); j < r.cols().end(); ++j) {
+            C[i][j] += A[i][k] * B[k][j];
           }
         }
       }
-    }
-  );
+    });
 
   return true;
 }