talib.COS

```talib.COS()```函数的返回值为：一维数组。
array

talib.COS(inReal)

```inReal```参数用于指定K线数据。
inReal
true
{@struct/Record Record}结构数组、数值数组

```javascript
function main() {
    var data = [-3.14, 0, 3.14]
    var ret = talib.COS(data)
    Log(ret)
}

import talib
import numpy as np
def main():
    data = [-3.14, 0, 3.14]
    ret = talib.COS(np.array(data))
    Log(ret)

void main() {
    std::vector<double> data = {-3.14, 0, 3.14};
    auto ret = talib.COS(data);
    Log(ret);
}

COS()函数在talib库文档中的描述为：COS(Records[Close]) = Array(outReal)