Updated: 2021/Apr/14

CATANH(3)                  Library Functions Manual                  CATANH(3)

     catanh, catanhf, catanhl - complex arc hyperbolic tangent functions

     #include <complex.h>

     double complex
     catanh(double complex z);

     float complex
     catanhf(float complex z);

     long double complex
     catanhl(long double complex z);

     These functions compute the complex arc hyperbolic tangent of z, with
     branch cuts outside the interval [-1, +1] along the real axis.

     These functions return the complex arc hyperbolic tangent value, in the
     range of a strip mathematically unbounded along the real axis and in the
     interval [-i pi/2, +i pi/2] along the imaginary axis.

     No errors are defined.

     ctanh(3), IEEE Std 1003.1-2001 ("POSIX.1") <complex.h>

     Portions of this text are reprinted and reproduced in electronic form
     from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
     -- Portable Operating System Interface (POSIX), The Open Group Base
     Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
     Electrical and Electronics Engineers, Inc and The Open Group.  In the
     event of any discrepancy between this version and the original IEEE and
     The Open Group Standard, the original IEEE and The Open Group Standard is
     the referee document.  The original Standard can be obtained online at
     http://www.opengroup.org/unix/online.html .

NetBSD 9.99                    January 29, 2013                    NetBSD 9.99