acosh.cpp

来自「Digital filter designer s handbook C++ c」· C++ 代码 · 共 17 行

//
//  File = acosh.cpp
//

#include <stdlib.h>
#include <math.h>
#include "acosh.h"

double acosh(double x)
{
 double result;
 result = log(x + sqrt(x*x - 1.0));
 return(result);  
}

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