/usr/include/CLAM/ComplexTmplDec.hxx is in libclam-dev 1.4.0-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _ComplexTmplDec_
#define _ComplexTmplDec_
#include <iosfwd>
#include "CLAM_Math.hxx"
namespace CLAM
{
template <class T>
class ComplexTmpl
{
private:
T mRe;
T mIm;
public:
ComplexTmpl(T re = 0.f, T im = 0.f) : mRe(re), mIm(im) {}
ComplexTmpl(const ComplexTmpl<T> &rhs) : mRe(rhs.mRe), mIm(rhs.mIm) {}
const T Real() const { return mRe; } //< accessor returns the real part
const T Imag() const { return mIm; } //< accessor returns the imaginary part
void SetReal(const T re) { mRe = re; } //< accesor sets the real part
void SetImag(const T im) { mIm = im; } //< accesor sets the imaginary part
/// returns magnitude
const T Mag() const
{
#ifdef CLAM_OPTIMIZE
const float insignificant = 0.000001;
T absIm = Abs(mIm);
T absRe = Abs(mRe);
if(absIm<insignificant && absRe>insignificant) return absRe;
if(absRe<insignificant && absIm>insignificant) return absIm;
#endif
return CLAM_sqrt(mRe*mRe + mIm*mIm);
}
/// returns squared magnitude
const T SquaredMag() const
{
return mRe*mRe + mIm*mIm;
}
/// returns angle
const T Ang() const
{
return CLAM_atan2(mIm, mRe);
}
/// function to handle polar coordinates
ComplexTmpl<T> ToPolar(const T& r, const T& theta)
{
return ComplexTmpl<T>(r*CLAM_cos(theta), r*CLAM_sin(theta));
}
// ------ member operators ... ------
/// complex '=' operator (float)
ComplexTmpl<T>& operator = (const T re)
{
mRe = re;
mIm = 0.f;
return *this;
}
/// complex '=' operator
ComplexTmpl<T>& operator = (const ComplexTmpl<T>& rhs)
{
mRe = rhs.mRe;
mIm = rhs.mIm;
return *this;
}
/// complex '+=' operator
ComplexTmpl<T>& operator += (const ComplexTmpl<T>& rhs)
{
mRe += rhs.mRe;
mIm += rhs.mIm;
return *this;
}
/// complex '-=' operator
ComplexTmpl<T>& operator -= (const ComplexTmpl<T>& rhs)
{
mRe -= rhs.mRe;
mIm -= rhs.mIm;
return *this;
}
/// complex '+' operator
ComplexTmpl<T> operator + (const ComplexTmpl<T>& rhs) const
{
return ComplexTmpl<T>(mRe + rhs.mRe, mIm + rhs.mIm);
}
/// complex '-' operator
ComplexTmpl<T> operator - (const ComplexTmpl<T>& rhs) const
{
return ComplexTmpl<T>(mRe - rhs.mRe, mIm - rhs.mIm);
}
/// complex '*' operator
ComplexTmpl<T> operator * (const ComplexTmpl<T>& rhs) const
{
return ComplexTmpl<T>(mRe*rhs.mRe - mIm*rhs.mIm, mRe*rhs.mIm + rhs.mRe*mIm);
}
/// Product by a scalar
ComplexTmpl<T> operator * (const T& scalar) const
{
return ComplexTmpl<T>(mRe*scalar, mIm*scalar);
}
/// complex '/' operator
ComplexTmpl<T> operator / (const ComplexTmpl<T>& rhs) const
{
const float rhsInvSquaredMag = 1.f/(rhs.mRe*rhs.mRe + rhs.mIm*rhs.mIm);
return ComplexTmpl<T>((mRe*rhs.mRe + mIm*rhs.mIm)*rhsInvSquaredMag, (rhs.mRe*mIm - mRe*rhs.mIm)*rhsInvSquaredMag);
}
/// complex '==' operator
bool operator == (const ComplexTmpl<T>& b) const
{
return (mRe == b.mRe) && (mIm == b.mIm);
}
/// complex '!=' operator
bool operator != (const ComplexTmpl<T>& b) const
{
return !(*this == b);
}
};
template <class T>
std::istream& operator >> (std::istream & stream, ComplexTmpl<T> & a);
template <class T>
std::ostream& operator << (std::ostream & stream, const ComplexTmpl<T> & a);
} // namespace CLAM
#endif // _ComplexTmplDec_
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