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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SVTOOLS_SOURCE_DIALOGS_MCVMATH_HXX
#define INCLUDED_SVTOOLS_SOURCE_DIALOGS_MCVMATH_HXX
#include <tools/solar.h>
class FixCpx;
// No of fractal bits
// allowed range 0..14, must be even
#define FIX_POST 14
// scale for ...Big() -Functions
#if (FIX_POST>=4)
#define FIX_P2 4
#define FIX_P3 (FIX_POST-FIX_P2)
#else
#define FIX_P2 0
#define FIX_P3 FIX_POST
#endif
#if (FIX_POST>=1)
#define FIX_ADD (1<<(FIX_POST-1))
#else
#define FIX_ADD 0
#endif
#if (FIX_P2>=1)
#define FIX_A2 (1<<(FIX_P2-1))
#else
#define FIX_A2 0
#endif
#if (FIX_P3>=1)
#define FIX_A3 (1<<(FIX_P3-1))
#else
#define FIX_A3 0
#endif
// - Fix -
class Fix
{
private:
friend class FixCpx;
public:
long x;
public:
Fix() { x=0; }
Fix( int i ) { x=(long(i)<<FIX_POST); }
Fix( short l ) { x=(long(l)<<FIX_POST); }
Fix( sal_uInt16 l ) { x=(long(l)<<FIX_POST); }
Fix( long l ) { x=(l<<FIX_POST); }
Fix( long Z, long N ) { x=(Z<<FIX_POST)/N; }
enum class Bits { Bits };
Fix(long bits, Bits): x(bits) {}
void SetInternVal( long nVal ) { x=nVal; }
long GetInternVal() const { return x; }
void operator+= ( const Fix& a ) { x+=a.x; }
void operator-= ( const Fix& a ) { x-=a.x; }
void operator*= ( const Fix& a ) { x=(x*a.x+FIX_ADD)>>FIX_POST; }
void operator/= ( const Fix& a ) { x=(x<<FIX_POST)/a.x; }
friend Fix operator- ( const Fix& a );
void MultBig( const Fix& a )
{ x=((((a.x+FIX_A2)>>FIX_P2)*x+FIX_A3)>>FIX_P3); }
void DivBig( const Fix& a )
{ x=((x<<FIX_P3)/a.x)<<FIX_P2; }
friend bool operator> ( const Fix& a, const Fix& b ) { return a.x > b.x; }
friend bool operator< ( const Fix& a, const Fix& b ) { return a.x < b.x; }
operator long() const { return (x+FIX_ADD) >> FIX_POST; }
operator double() const { return double(x)/(1<<FIX_POST); }
friend Fix operator+ ( const Fix& a, const Fix& b );
friend Fix operator- ( const Fix& a, const Fix& b );
friend Fix operator* ( const Fix& a, const Fix& b );
friend Fix operator/ ( const Fix& a, const Fix& b );
friend FixCpx operator-( const FixCpx& a );
};
// - FixCpx -
class FixCpx
{
public:
Fix r;
Fix i;
public:
FixCpx() : r(), i() {}
FixCpx( Fix a ) : r( a ), i() {}
FixCpx( Fix a, Fix b ) : r( a ), i( b ) {}
Fix& GetReal() { return r; }
Fix& GetImag() { return i; }
void operator*= ( const FixCpx& ra );
void MultBig( const FixCpx& ra, const FixCpx& rb );
friend FixCpx operator+ ( const FixCpx& a, const FixCpx& b );
friend FixCpx operator- ( const FixCpx& a, const FixCpx& b );
friend FixCpx operator* ( const FixCpx& a, const FixCpx& b );
friend FixCpx operator/ ( const FixCpx& a, const FixCpx& b );
friend FixCpx operator- ( const FixCpx& a );
};
inline Fix operator- ( const Fix& a )
{
Fix f;
f.x = -a.x;
return f;
}
inline Fix operator+ ( const Fix& a, const Fix& b )
{
return Fix(a.x+b.x, Fix::Bits::Bits);
}
inline Fix operator- ( const Fix& a, const Fix& b )
{
return Fix(a.x-b.x, Fix::Bits::Bits);
}
inline Fix operator* ( const Fix& a, const Fix& b )
{
return Fix((a.x*b.x+FIX_ADD)>>FIX_POST, Fix::Bits::Bits);
}
inline Fix operator/ ( const Fix& a, const Fix& b )
{
return Fix((a.x<<FIX_POST)/b.x, Fix::Bits::Bits);
}
inline FixCpx operator- ( const FixCpx& a )
{
FixCpx fc;
fc.r.x = -a.r.x;
fc.i.x = -a.i.x;
return fc;
}
inline FixCpx operator+ ( const FixCpx& a, const FixCpx& b )
{
return FixCpx( a.r+b.r, a.i+b.i );
}
inline FixCpx operator- ( const FixCpx& a, const FixCpx& b )
{
return FixCpx( a.r-b.r, a.i-b.i );
}
inline void FixCpx::operator*= ( const FixCpx& ra )
{
Fix rr = ra.r*r-ra.i*i;
i = ra.r*i+ra.i*r;
r = rr;
}
inline FixCpx operator* ( const FixCpx& a, const FixCpx& b )
{
return FixCpx( a.r*b.r-a.i*b.i, a.r*b.i+a.i*b.r );
}
inline FixCpx operator/ ( const FixCpx& a, const FixCpx& b )
{
return FixCpx( (a.r*b.r+a.i*b.i)/(b.r*b.r+b.i*b.i),
(b.r*a.r-a.r*b.i)/(b.r*b.r+b.i*b.i) );
}
Fix ImpMultBig2( const Fix& a, const Fix& b );
sal_uInt16 ImpSqrt( sal_uLong nRadi );
FixCpx ImpExPI( sal_uInt16 nPhi );
#endif // INCLUDED_SVTOOLS_SOURCE_DIALOGS_MCVMATH_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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