man3/ctanh.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\"
   3 .\" SPDX-License-Identifier: GPL-1.0-or-later
   4 .\"
   5 .TH ctanh 3 (date) "Linux man-pages (unreleased)"
   6 .SH NAME
   7 ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
   8 .SH LIBRARY
   9 Math library
  10 .RI ( libm ", " \-lm )
  11 .SH SYNOPSIS
  12 .nf
  13 .B #include <complex.h>
  14 .PP
  15 .BI "double complex ctanh(double complex " z );
  16 .BI "float complex ctanhf(float complex " z );
  17 .BI "long double complex ctanhl(long double complex " z );
  18 .fi
  19 .SH DESCRIPTION
  20 These functions calculate the complex hyperbolic tangent of
  21 .IR z .
  22 .PP
  23 The complex hyperbolic tangent function is defined
  24 mathematically as:
  25 .PP
  26 .in +4n
  27 .EX
  28 ctanh(z) = csinh(z) / ccosh(z)
  29 .EE
  30 .in
  31 .SH VERSIONS
  32 These functions first appeared in glibc in version 2.1.
  33 .SH ATTRIBUTES
  34 For an explanation of the terms used in this section, see
  35 .BR attributes (7).
  36 .ad l
  37 .nh
  38 .TS
  39 allbox;
  40 lbx lb lb
  41 l l l.
  42 Interface       Attribute       Value
  43 T{
  44 .BR ctanh (),
  45 .BR ctanhf (),
  46 .BR ctanhl ()
  47 T}      Thread safety   MT-Safe
  48 .TE
  49 .hy
  50 .ad
  51 .sp 1
  52 .SH STANDARDS
  53 C99, POSIX.1-2001, POSIX.1-2008.
  54 .SH SEE ALSO
  55 .BR cabs (3),
  56 .BR catanh (3),
  57 .BR ccosh (3),
  58 .BR csinh (3),
  59 .BR complex (7)