Marble

MathHelper.cpp
1/*
2 SPDX-FileCopyrightText: 2008 Torsten Rahn <tackat@kde.org>
3
4 SPDX-License-Identifier: LGPL-2.0-or-later
5*/
6
7#include "MathHelper.h"
8
9#ifdef Q_CC_MSVC
10#include <float.h>
11
12qreal msvc_asinh(qreal x)
13{
14 if ( _isnan ( x ) ) {
15 errno = EDOM;
16 return x;
17 }
18
19 return ( log( x + sqrt ( x * x + 1.0 ) ) );
20}
21
22qreal msvc_atanh(qreal x)
23{
24 return ( 0.5 * log( ( 1.0 + x ) / ( 1.0 - x ) ) );
25}
26
27#endif // Q_CC_MSVC
28
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