Implemented Number.prototype.toFixed()

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: Tamas Czene tczene.u-szeged@partner.samsung.com

tests/jerry/number_prototype_to_fixed.js

@@ -0,0 +1,61 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// 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.
+
+//This test will not pass on FLOAT32 due to precision issues
+
+assert((123.56).toFixed() === "124");
+assert((123.56).toFixed(0) === "124");
+assert((123.56).toFixed(1) === "123.6");
+assert((123.56).toFixed(5) === "123.56000");
+assert((1.23e-10).toFixed(2) === "0.00");
+assert((1.23e+20).toFixed(2) === "123000000000000000000.00");
+assert((1.23e+21).toFixed(2) === "1.23e+21");
+assert((-1.23).toFixed(1) === "-1.2");
+assert((0.00023).toFixed(0) === "0");
+assert((0.356).toFixed(2) === "0.36");
+assert((0.0000356).toFixed(5) === "0.00004");
+assert((0.000030056).toFixed(7) === "0.0000301");
+assert(Infinity.toFixed(0) === "Infinity");
+assert((-Infinity).toFixed(0) === "-Infinity");
+assert(NaN.toFixed(0) === "NaN");
+assert((0.0).toFixed(0) === "0");
+assert((0.0).toFixed(1) === "0.0");
+assert((-0.0).toFixed(0) === "-0");
+assert((-0.0).toFixed(1) === "-0.0");
+assert((123456789012345678901.0).toFixed(20) === "123456789012345680000.00000000000000000000");
+
+var obj = { toFixed : Number.prototype.toFixed };
+assert(obj.toFixed(0) === "NaN");
+
+try {
+    assert(obj.toFixed(-1));
+    assert(false);
+} catch (e) {
+    assert(e instanceof RangeError);
+}
+
+try {
+    (12).toFixed(-1);
+    assert(false);
+} catch (e) {
+    assert(e instanceof RangeError)
+}
+
+try {
+    (12).toFixed(21);
+    assert(false);
+} catch (e) {
+    assert(e instanceof RangeError)
+}