Fix Number.prototype.toFixed if argument is outside int32 range

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai.u-szeged@partner.samsung.com

tests/jerry/number_prototype_to_fixed.js

@@ -35,10 +35,26 @@ 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");
+assert((123.56).toFixed(NaN) === "124");
+assert((123.56).toFixed(-0.9) === "124");
 
 var obj = { toFixed : Number.prototype.toFixed };
 assert(obj.toFixed(0) === "NaN");
 
+try {
+    assert(obj.toFixed(Infinity));
+    assert(false);
+} catch (e) {
+    assert(e instanceof RangeError);
+}
+
+try {
+    assert(obj.toFixed(-Infinity));
+    assert(false);
+} catch (e) {
+    assert(e instanceof RangeError);
+}
+
 try {
     assert(obj.toFixed(-1));
     assert(false);