Add Embree thirdparty library

thirdparty/embree/common/algorithms/parallel_set.cpp

@@ -0,0 +1,43 @@
+// Copyright 2009-2020 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+
+#include "parallel_set.h"
+#include "../sys/regression.h"
+
+namespace embree
+{
+  struct parallel_set_regression_test : public RegressionTest
+  {
+    parallel_set_regression_test(const char* name) : RegressionTest(name) {
+      registerRegressionTest(this);
+    }
+    
+    bool run ()
+    {
+      bool passed = true;
+
+      /* create vector with random numbers */
+      const size_t N = 10000;
+      std::vector<uint32_t> unsorted(N);
+      for (size_t i=0; i<N; i++) unsorted[i] = 2*rand();
+      
+      /* created set from numbers */
+      parallel_set<uint32_t> sorted;
+      sorted.init(unsorted);
+
+      /* check that all elements are in the set */
+      for (size_t i=0; i<N; i++) {
+	passed &= sorted.lookup(unsorted[i]);
+      }
+
+      /* check that these elements are not in the set */
+      for (size_t i=0; i<N; i++) {
+	passed &= !sorted.lookup(unsorted[i]+1);
+      }
+
+      return passed;
+    }
+  };
+
+  parallel_set_regression_test parallel_set_regression("parallel_set_regression_test");
+}