Add typedarray routine: reduce and reduceRight (#1569)

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com

tests/jerry-test-suite/es2015/22/22.02/22.02.03/22.02.03-015.js

@@ -0,0 +1,20 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var total = new Float32Array([-1.5, 0, 1.5, 2]).reduce(function(a, b, c) {
+  return a + b + c;
+}, 10);
+
+assert(total === 18); // 10 + (-1.5) + 0 + 0 + 1 + 1.5 + 2 + 2 + 3

tests/jerry-test-suite/es2015/22/22.02/22.02.03/22.02.03-016.js

@@ -0,0 +1,20 @@
+/* Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+var total = new Float32Array([-1.5, 0, 1.5, 2]).reduceRight(function(a, b) {
+  return a - b;
+});
+
+assert (total === 2) // 2 - 1.5 - 0 - (-1.5)