atanh(), atanhf(), atanhl()

Compute an inverse hyperbolic tangent

Synopsis:

#include <math.h>

double atanh( double x );

float atanhf( float x );

long double atanhl( long double x );

libm

Use the -l m option to qcc to link against this library.

These functions compute the inverse hyperbolic tangent (specified in radians) of x.

The inverse hyperbolic tangent of x.

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

int main( void )
{
    printf( "%f\n", atanh( 0.5 ) );
    return EXIT_SUCCESS;
}

produces the output:

0.549306