1/*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16declare function print(arg:any):string;
17function replace(a : number)
18{
19    return a;
20}
21let len = 0;
22function cos()
23{
24    Math.cos = replace;
25    len = Math.cos(1);
26    print(len);
27}
28cos()
29
30len = Math.sin(0); // 0
31print(len);
32len = Math.sin(1); // 0.84
33print(len);
34len = Math.sin(Math.PI / 2);
35print(len);
36function sin()
37{
38    Math.sin = replace;
39    len = Math.sin(1)
40    print(len);
41}
42sin()
43
44len = Math.acos(0.5);// 1.0471975511965979
45print(len);
46
47