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numtrait.h
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numtrait.h
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// -*- C++ -*-
/***************************************************************************
* blitz/numtrait.h Declaration of the NumericTypeTraits class
*
* $Id: numtrait.h,v 1.6 2005/05/07 04:17:56 julianc Exp $
*
* Copyright (C) 1997-2001 Todd Veldhuizen <[email protected]>
*
* 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.
*
* Suggestions: [email protected]
* Bugs: [email protected]
*
* For more information, please see the Blitz++ Home Page:
* http://oonumerics.org/blitz/
*
***************************************************************************/
#ifndef BZ_NUMTRAIT_H
#define BZ_NUMTRAIT_H
#ifndef BZ_BLITZ_H
#include <blitz/blitz.h>
#endif
BZ_NAMESPACE(blitz)
#ifndef BZ_USE_NUMTRAIT
#define BZ_SUMTYPE(X) X
#define BZ_DIFFTYPE(X) X
#define BZ_FLOATTYPE(X) X
#define BZ_SIGNEDTYPE(X) X
#else
#define BZ_SUMTYPE(X) _bz_typename NumericTypeTraits<X>::T_sumtype
#define BZ_DIFFTYPE(X) _bz_typename NumericTypeTraits<X>::T_difftype
#define BZ_FLOATTYPE(X) _bz_typename NumericTypeTraits<X>::T_floattype
#define BZ_SIGNEDTYPE(X) _bz_typename NumericTypeTraits<X>::T_signedtype
template<typename P_numtype>
class NumericTypeTraits {
public:
typedef P_numtype T_sumtype; // Type to be used for summing
typedef P_numtype T_difftype; // Type to be used for difference
typedef P_numtype T_floattype; // Type to be used for floating-point
// calculations
typedef P_numtype T_signedtype; // Type to be used for signed calculations
enum { hasTrivialCtor = 0 }; // Assume the worst
};
#define BZDECLNUMTRAIT(X,Y,Z,W,U) \
template<> \
class NumericTypeTraits<X> { \
public: \
typedef Y T_sumtype; \
typedef Z T_difftype; \
typedef W T_floattype; \
typedef U T_signedtype; \
enum { hasTrivialCtor = 1 }; \
}
#ifdef BZ_HAVE_BOOL
BZDECLNUMTRAIT(bool,unsigned,int,float,int);
#endif
BZDECLNUMTRAIT(char,int,int,float,char);
BZDECLNUMTRAIT(unsigned char, unsigned, int, float,int);
BZDECLNUMTRAIT(short int, int, int, float, short int);
BZDECLNUMTRAIT(short unsigned int, unsigned int, int, float, int);
BZDECLNUMTRAIT(int, long, int, float, int);
BZDECLNUMTRAIT(unsigned int, unsigned long, int, float, long);
BZDECLNUMTRAIT(long, long, long, double, long);
BZDECLNUMTRAIT(unsigned long, unsigned long, long, double, long);
BZDECLNUMTRAIT(float, double, float, float, float);
BZDECLNUMTRAIT(double, double, double, double, double);
#ifdef BZ_HAVE_COMPLEX
// BZDECLNUMTRAIT(complex<float>, complex<double>, complex<float>, complex<float>);
// BZDECLNUMTRAIT(complex<double>, complex<long double>, complex<double>, complex<double>);
#endif // BZ_HAVE_COMPLEX
#endif // BZ_USE_NUMTRAIT
BZ_NAMESPACE_END
#endif // BZ_NUMTRAIT_H