catanhf, catanh, catanhl
From cppreference.com
Defined in header <complex.h>


(since C99)  
(since C99)  
(since C99)  
Computes the complex arc hyperbolic tangent of z
with branch cuts outside the interval [−1; +1] along the real axis.
Contents 
Parameters
z    complex argument 
Return value
The complex arc hyperbolic tangent of z
in the interval (−∞; +∞) along the real axis and in the interval [−iπ/2; +iπ/2] along the imaginary axis.
Example
This section is incomplete Reason: no example 
See also
(C99)(C99)(C99) 
computes the complex arc hyperbolic sine (function) 
(C99)(C99)(C99) 
computes the complex arc hyperbolic cosine (function) 