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1/*
2 * Copyright (c) 2023-2025 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
16function main(): int {
17    let repetitions: int = 500000;
18
19    return execute_test(repetitions);
20}
21
22function release_main(): int {
23    let repetitions: int = 10000000;
24
25    return execute_test(repetitions);
26}
27
28function execute_test(repetitions: int): int {
29
30    let res: double = 0;
31    let pi: double = 3.14158;
32
33    res = CallSlowFunction(1, repetitions);
34    if (Absolute(res - pi) > 0.0001) {
35        console.println("Pi calculation went wrong")
36        return 1;
37    }
38    res = CallSlowFunction(2, repetitions);
39    if (Absolute(res - pi) > 0.0001) {
40        console.println("Pi calculation went wrong")
41        return 1;
42    }
43    res = CallSlowFunction(3, repetitions);
44    if (Absolute(res - pi) > 0.0001) {
45        console.println("Pi calculation went wrong")
46        return 1;
47    }
48    res = CallSlowFunction(4, repetitions);
49    if (Absolute(res - pi) > 0.0001) {
50        console.println("Pi calculation went wrong")
51        return 1;
52    }
53
54    return 0;
55}
56
57function Absolute(val: double): double {
58    if (val < 0) {
59        return val *= -1;
60    }
61    return val;
62}
63
64function CallSlowFunction(foo: int, repetitions: int): double {
65    let res: double = 0;
66    if (foo == 1) {
67        res = SlowETSFunction(repetitions);
68    } else if (foo == 2) {
69        res = SlowETSFunctionCopy1(repetitions);
70    } else if (foo == 3) {
71        res = SlowETSFunctionCopy2(repetitions);
72    } else if (foo == 4) {
73        res = SlowETSFunctionCopy3(repetitions);
74    }
75    return res;
76}
77
78// Doing copypaste because of compiler optimisations
79function SlowETSFunction(repetitions: int): double {
80    let ret: double = 0.0;
81    let sign: int = 1;
82    for (let i: int = 0; i < repetitions; i++) {
83        ret += sign / (2.0 * i + 1);
84        sign *= -1;
85    }
86    return 4 * ret;
87}
88
89function SlowETSFunctionCopy1(repetitions: int): double {
90    let ret: double = 0.0;
91    let sign: int = 1;
92    for (let i: int = 0; i < repetitions; i++) {
93        ret += sign / (2.0 * i + 1);
94        sign *= -1;
95    }
96    return 4 * ret;
97}
98
99function SlowETSFunctionCopy2(repetitions: int): double {
100    let ret: double = 0.0;
101    let sign: int = 1;
102    for (let i: int = 0; i < repetitions; i++) {
103        ret += sign / (2.0 * i + 1);
104        sign *= -1;
105    }
106    return 4 * ret;
107}
108
109function SlowETSFunctionCopy3(repetitions: int): double {
110    let ret: double = 0.0;
111    let sign: int = 1;
112    for (let i: int = 0; i < repetitions; i++) {
113        ret += sign / (2.0 * i + 1);
114        sign *= -1;
115    }
116    return 4 * ret;
117}
118