Question

How to compute inverse hyperbolic tangent in C

Answer 1

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

int main(void)
{
    double d = atanh(0.9);

    printf("%lf", d);
}



/*
run:

1.472219

*/

 

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Answer 2

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

int main(void)
{
    float f = atanhf(-0.9);

    printf("%f", f);
}



/*
run:

-1.472219

*/

 

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Answer 3

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

int main(void)
{
    long double ld = atanhl(0.5);

    printf("%Lf", ld);
}



/*
run:

0.549306

*/

 

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