1 | // -*- C++ -*- |
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2 | /*************************************************************************** |
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3 | * blitz/numtrait.h Declaration of the NumericTypeTraits class |
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4 | * |
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5 | * $Id: numtrait.h,v 1.6 2005/05/07 04:17:56 julianc Exp $ |
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6 | * |
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7 | * Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org> |
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8 | * |
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9 | * This program is free software; you can redistribute it and/or |
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10 | * modify it under the terms of the GNU General Public License |
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11 | * as published by the Free Software Foundation; either version 2 |
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12 | * of the License, or (at your option) any later version. |
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13 | * |
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14 | * This program is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * Suggestions: blitz-dev@oonumerics.org |
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20 | * Bugs: blitz-bugs@oonumerics.org |
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21 | * |
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22 | * For more information, please see the Blitz++ Home Page: |
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23 | * http://oonumerics.org/blitz/ |
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24 | * |
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25 | ***************************************************************************/ |
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26 | |
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27 | #ifndef BZ_NUMTRAIT_H |
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28 | #define BZ_NUMTRAIT_H |
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29 | |
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30 | #ifndef BZ_BLITZ_H |
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31 | #include <blitz/blitz.h> |
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32 | #endif |
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33 | |
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34 | BZ_NAMESPACE(blitz) |
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35 | |
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36 | #ifndef BZ_USE_NUMTRAIT |
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37 | #define BZ_SUMTYPE(X) X |
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38 | #define BZ_DIFFTYPE(X) X |
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39 | #define BZ_FLOATTYPE(X) X |
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40 | #define BZ_SIGNEDTYPE(X) X |
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41 | #else |
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42 | |
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43 | #define BZ_SUMTYPE(X) _bz_typename NumericTypeTraits<X>::T_sumtype |
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44 | #define BZ_DIFFTYPE(X) _bz_typename NumericTypeTraits<X>::T_difftype |
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45 | #define BZ_FLOATTYPE(X) _bz_typename NumericTypeTraits<X>::T_floattype |
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46 | #define BZ_SIGNEDTYPE(X) _bz_typename NumericTypeTraits<X>::T_signedtype |
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47 | |
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48 | template<typename P_numtype> |
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49 | class NumericTypeTraits { |
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50 | public: |
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51 | typedef P_numtype T_sumtype; // Type to be used for summing |
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52 | typedef P_numtype T_difftype; // Type to be used for difference |
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53 | typedef P_numtype T_floattype; // Type to be used for floating-point |
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54 | // calculations |
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55 | typedef P_numtype T_signedtype; // Type to be used for signed calculations |
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56 | enum { hasTrivialCtor = 0 }; // Assume the worst |
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57 | }; |
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58 | |
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59 | #define BZDECLNUMTRAIT(X,Y,Z,W,U) \ |
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60 | template<> \ |
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61 | class NumericTypeTraits<X> { \ |
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62 | public: \ |
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63 | typedef Y T_sumtype; \ |
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64 | typedef Z T_difftype; \ |
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65 | typedef W T_floattype; \ |
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66 | typedef U T_signedtype; \ |
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67 | enum { hasTrivialCtor = 1 }; \ |
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68 | } |
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69 | |
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70 | #ifdef BZ_HAVE_BOOL |
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71 | BZDECLNUMTRAIT(bool,unsigned,int,float,int); |
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72 | #endif |
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73 | |
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74 | BZDECLNUMTRAIT(char,int,int,float,char); |
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75 | BZDECLNUMTRAIT(unsigned char, unsigned, int, float,int); |
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76 | BZDECLNUMTRAIT(short int, int, int, float, short int); |
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77 | BZDECLNUMTRAIT(short unsigned int, unsigned int, int, float, int); |
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78 | BZDECLNUMTRAIT(int, long, int, float, int); |
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79 | BZDECLNUMTRAIT(unsigned int, unsigned long, int, float, long); |
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80 | BZDECLNUMTRAIT(long, long, long, double, long); |
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81 | BZDECLNUMTRAIT(unsigned long, unsigned long, long, double, long); |
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82 | BZDECLNUMTRAIT(float, double, float, float, float); |
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83 | BZDECLNUMTRAIT(double, double, double, double, double); |
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84 | |
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85 | #ifdef BZ_HAVE_COMPLEX |
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86 | // BZDECLNUMTRAIT(complex<float>, complex<double>, complex<float>, complex<float>); |
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87 | // BZDECLNUMTRAIT(complex<double>, complex<long double>, complex<double>, complex<double>); |
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88 | #endif // BZ_HAVE_COMPLEX |
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89 | |
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90 | #endif // BZ_USE_NUMTRAIT |
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91 | |
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92 | BZ_NAMESPACE_END |
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93 | |
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94 | #endif // BZ_NUMTRAIT_H |
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