man3/ctanh.3

   1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
   2 .\"
   3 .\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
   4 .\" Distributed under GPL
   5 .\" %%%LICENSE_END
   6 .\"
   7 .TH CTANH 3 2017-09-15 "" "Linux Programmer's Manual"
   8 .SH NAME
   9 ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
  10 .SH SYNOPSIS
  11 .B #include <complex.h>
  12 .PP
  13 .BI "double complex ctanh(double complex " z ");"
  14 .br
  15 .BI "float complex ctanhf(float complex " z );
  16 .br
  17 .BI "long double complex ctanhl(long double complex " z ");"
  18 .PP
  19 Link with \fI\-lm\fP.
  20 .SH DESCRIPTION
  21 These functions calculate the complex hyperbolic tangent of
  22 .IR z .
  23 .PP
  24 The complex hyperbolic tangent function is defined
  25 mathematically as:
  26 .PP
  27 .nf
  28     ctanh(z) = csinh(z) / ccosh(z)
  29 .fi
  30 .SH VERSIONS
  31 These functions first appeared in glibc in version 2.1.
  32 .SH ATTRIBUTES
  33 For an explanation of the terms used in this section, see
  34 .BR attributes (7).
  35 .TS
  36 allbox;
  37 lbw27 lb lb
  38 l l l.
  39 Interface       Attribute       Value
  40 T{
  41 .BR ctanh (),
  42 .BR ctanhf (),
  43 .BR ctanhl ()
  44 T}      Thread safety   MT-Safe
  45 .TE
  46 .sp 1
  47 .SH CONFORMING TO
  48 C99, POSIX.1-2001, POSIX.1-2008.
  49 .SH SEE ALSO
  50 .BR cabs (3),
  51 .BR catanh (3),
  52 .BR ccosh (3),
  53 .BR csinh (3),
  54 .BR complex (7)