Question

How to compute inverse hyperbolic cosine in C

Answer 1

#include <stdio.h>
#include <math.h>

int main(void)
{
    double d = acosh(10);
    
    printf("%lf", d);

    return 0;
}



/*
run:

2.993223

*/

 

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Answer 2

#include <stdio.h>
#include <math.h>

int main(void)
{
    float f = acoshf(1);
    
    printf("%f", f);

    return 0;
}



/*
run:

0.000000

*/

 

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Answer 3

#include <stdio.h>
#include <math.h>

int main(void)
{
    long double ld = acoshl(0.5);
    
    printf("%Lf", ld);

    return 0;
}



/*
run:

nan

*/

 

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