C++ acosh()用法及代碼示例

acosh()是C++ STL中的內置函數，它返回以弧度給出的角度的反雙曲餘弦值。

用法:

acosh(data_type x)

參數：該函數接受一個強製性參數x，該參數指定弧度中的雙曲反角應大於或等於1。如果參數小於1，則返回-nan。該參數可以是double，float或long double數據類型。

返回：acosh()函數以弧度返回參數的反雙曲餘弦值，其範圍為[0，inf]。

以下示例程序旨在說明上述方法：

示例1:

// C++ program to demonstrate 
// the acosh() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    double x = 50.0; 
  
    // Function call to calculate acosh(x) value 
    double result = acosh(x); 
  
    cout << "acosh(50.0) = " << result << " radians" << endl; 
    cout << "acosh(50.0) = " << result * 180 / 3.141592 
         << " degrees" << endl; 
    return 0; 
}

輸出：

acosh(50.0) = 4.60507 radians
acosh(50.0) = 263.851 degrees

示例2:

// C++ program to demonstrate 
// the acosh() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    int x = 40.0; 
  
    // Function call to calculate acosh(x) value 
    double result = acosh(x); 
  
    cout << "acosh(40.0) = " << result << " radians" << endl; 
    cout << "acosh(40.0) = " << result * 180 / 3.141592 
         << " degrees" << endl; 
    return 0; 
}

輸出：

acosh(40.0) = 4.38187 radians
acosh(40.0) = 251.063 degrees

錯誤和異常：當將字符串或字符作為參數傳遞時，該函數不返回任何匹配函數來調用錯誤。

示例3:

// C++ program to demonstrate 
// the acosh() function 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    string x = "gfg"; 
  
    // Function call to calculate acosh(x) value 
    double result = acosh(x); 
  
    cout << "acosh(50.0) = " << result << " radians" << endl; 
    cout << "acosh(50.0) = " << result * 180 / 3.141592 
         << " degrees" << endl; 
    return 0; 
}

輸出：

prog.cpp:11:25: error: no matching function for call to 'acosh(std::__cxx11::string&)'
  double result = acosh(x);

示例4:

// C++ program to demonstrate 
// the acosh() function 
// value less than 1 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    double x = -50.0; 
  
    // Function call to calculate acosh(x) value 
    double result = acosh(x); 
  
    cout << "acosh(-50.0) = " << result << " radians" << endl; 
    cout << "acosh(-50.0) = " << result * 180 / 3.141592 
         << " degrees" << endl; 
    return 0; 
}

輸出：

acosh(-50.0) = -nan radians
acosh(-50.0) = -nan degrees

相關用法

注：本文由純淨天空篩選整理自pawan_asipu大神的英文原創作品 acosh() function in C++ STL。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。