man3/ctan.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 CTAN 3 2022-09-09 "Linux man-pages (unreleased)"
   6 .SH NAME
   7 ctan, ctanf, ctanl \- complex tangent function
   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 ctan(double complex " z );
  16 .BI "float complex ctanf(float complex " z );
  17 .BI "long double complex ctanl(long double complex " z );
  18 .fi
  19 .SH DESCRIPTION
  20 These functions calculate the complex tangent of
  21 .IR z .
  22 .PP
  23 The complex tangent function is defined as:
  24 .PP
  25 .in +4n
  26 .EX
  27 ctan(z) = csin(z) / ccos(z)
  28 .EE
  29 .in
  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 .ad l
  36 .nh
  37 .TS
  38 allbox;
  39 lbx lb lb
  40 l l l.
  41 Interface       Attribute       Value
  42 T{
  43 .BR ctan (),
  44 .BR ctanf (),
  45 .BR ctanl ()
  46 T}      Thread safety   MT-Safe
  47 .TE
  48 .hy
  49 .ad
  50 .sp 1
  51 .SH STANDARDS
  52 C99, POSIX.1-2001, POSIX.1-2008.
  53 .SH SEE ALSO
  54 .BR cabs (3),
  55 .BR catan (3),
  56 .BR ccos (3),
  57 .BR csin (3),
  58 .BR complex (7)