blob: 7fb81126f45f17e7d603ffee162d2225c1f3c6ed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2006-2008 - INRIA - Bruno JOFRET
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
*/
/*
// METHOD
// based on the formula atanh(z) = i atan(-i z)
*/
#include "atanh.h"
#include "atan.h"
doubleComplex zatanhs(doubleComplex z) {
doubleComplex minus_i_z = DoubleComplex(zimags(z), -zreals(z));
doubleComplex atan_minus_i_z = zatans(minus_i_z);
return DoubleComplex(-zimags(atan_minus_i_z), zreals(atan_minus_i_z));
}
|
