1 .\" $NetBSD: catanh.3,v 1.3 2013/01/29 02:05:09 matt Exp $
2 .\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
10 .Nd complex arc hyperbolic tangent functions
14 .Fn catanh "double complex z"
16 .Fn catanhf "float complex z"
17 .Ft long double complex
18 .Fn catanhl "long double complex z"
20 These functions compute the complex arc hyperbolic tangent of
22 with branch cuts outside the interval
23 [\-1,\ +1] along the real axis.
25 These functions return the complex arc hyperbolic tangent value,
26 in the range of a strip mathematically unbounded along
27 the real axis and in the interval [\-i pi/2,\ +i pi/2] along
30 No errors are defined.
36 Portions of this text are reprinted and reproduced in electronic form
37 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
38 -- Portable Operating System Interface (POSIX), The Open Group Base
39 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
40 Electrical and Electronics Engineers, Inc and The Open Group.
42 event of any discrepancy between this version and the original IEEE and
43 The Open Group Standard, the original IEEE and The Open Group Standard
44 is the referee document.
45 The original Standard can be obtained online at
46 http://www.opengroup.org/unix/online.html .