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/************************************************************************
************************************************************************
FAUST compiler
Copyright (C) 2003-2004 GRAME, Centre National de Creation Musicale
---------------------------------------------------------------------
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., 675 Mass Ave, Cambridge, MA 02139, USA.
************************************************************************
************************************************************************/
/*****************************************************************************
******************************************************************************
NUM
Y. Orlarey, (c) Grame 2002
------------------------------------------------------------------------------
Nums are tagged unions of ints and floats. Nums are completly described by
the num.h file, there is no num.cpp file.
API:
----
num(10); : num with int content
num(3.14159); : num with double content
num op num : op is any C binary operator
type(num) : 0 = int, 1 = double
int(num); : int content of num or conversion
double(num); : double content of num or conversion
History :
---------
2002-02-08 : First version
******************************************************************************
*****************************************************************************/
#ifndef __NUM__
#define __NUM__
//-------------------------------------------------------------------------
// Class num = (int x (int + double))
//-------------------------------------------------------------------------
class num
{
int fType;
union {
int i;
double f;
} fData;
public:
// constructeurs
num (int x=0) : fType(0) { fData.i = x; }
//num (double x) : fType(1) { fData.f = (double)x; }
num (double x) : fType(1) { fData.f = x; }
num (const num& n) : fType(n.fType) { fData.i = n.fData.i; }
num& operator = (int n) { fType = 0; fData.i = n; return *this; }
num& operator = (double n) { fType = 1; fData.f = n; return *this; }
// predicats
bool operator == (const num& n) const { return fType == n.fType && fData.i == n.fData.i; }
bool operator != (const num& n) const { return fType != n.fType || fData.i != n.fData.i; }
// accessors
int type() const { return fType; }
operator int() const { return (fType) ? int(fData.f) : fData.i; }
operator double() const { return (fType) ? fData.f : double(fData.i); }
};
inline int isfloat (const num& n) { return n.type(); }
inline const num operator+ (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)+double(y)) : num(int(x)+int(y)); }
inline const num operator- (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)-double(y)) : num(int(x)-int(y)); }
inline const num operator* (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)*double(y)) : num(int(x)*int(y)); }
inline const num operator/ (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)/double(y)) : num(int(x)/int(y)); }
inline const num operator% (const num& x, const num& y)
{ return num(int(x)%int(y)); }
// operations sur les bits
inline const num operator<< (const num& x, const num& y)
{ return num(int(x)<<int(y)); }
inline const num operator>> (const num& x, const num& y)
{ return num(int(x)>>int(y)); }
// operations boolennes sur les bits
inline const num operator& (const num& x, const num& y)
{ return num(int(x)&int(y)); }
inline const num operator| (const num& x, const num& y)
{ return num(int(x)|int(y)); }
inline const num operator^ (const num& x, const num& y)
{ return num(int(x)^int(y)); }
// operations de comparaison
inline const num operator> (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)>double(y)) : num(int(x)>int(y)); }
inline const num operator< (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)<double(y)) : num(int(x)<int(y)); }
inline const num operator>= (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)>=double(y)) : num(int(x)>=int(y)); }
inline const num operator<= (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)<=double(y)) : num(int(x)<=int(y)); }
inline const num operator== (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)==double(y)) : num(int(x)==int(y)); }
inline const num operator!= (const num& x, const num& y)
{ return (isfloat(x)|isfloat(y)) ? num(double(x)!=double(y)) : num(int(x)!=int(y)); }
#endif
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