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 );

Since:

BlackBerry 10.0.0

Arguments:

x
The value for which you want to compute the inverse hyperbolic tangent.

Library:

libm

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

Description:

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

Returns:

The inverse hyperbolic tangent of x.

Examples:

#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

Classification:

ANSI, POSIX 1003.1

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes

Last modified: 2014-06-24



Got questions about leaving a comment? Get answers from our Disqus FAQ.

comments powered by Disqus