1 | // -*- C++ -*- |
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2 | /*************************************************************************** |
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3 | * blitz/vecexprwrap.h Vector expression templates wrapper class |
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4 | * |
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5 | * $Id: vecexprwrap.h,v 1.5 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_VECEXPRWRAP_H |
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28 | #define BZ_VECEXPRWRAP_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 | template<typename P_expr> |
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37 | class _bz_VecExpr { |
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38 | |
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39 | public: |
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40 | typedef P_expr T_expr; |
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41 | typedef _bz_typename T_expr::T_numtype T_numtype; |
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42 | |
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43 | #ifdef BZ_PASS_EXPR_BY_VALUE |
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44 | _bz_VecExpr(T_expr a) |
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45 | : iter_(a) |
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46 | { } |
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47 | #else |
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48 | _bz_VecExpr(const T_expr& a) |
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49 | : iter_(a) |
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50 | { } |
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51 | #endif |
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52 | |
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53 | #ifdef BZ_MANUAL_VECEXPR_COPY_CONSTRUCTOR |
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54 | _bz_VecExpr(const _bz_VecExpr<T_expr>& a) |
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55 | : iter_(a.iter_) |
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56 | { } |
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57 | #endif |
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58 | |
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59 | T_numtype operator[](int i) const |
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60 | { return iter_[i]; } |
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61 | |
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62 | T_numtype operator()(int i) const |
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63 | { return iter_(i); } |
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64 | |
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65 | int length(int recommendedLength) const |
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66 | { return iter_.length(recommendedLength); } |
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67 | |
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68 | static const int |
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69 | _bz_staticLengthCount = P_expr::_bz_staticLengthCount, |
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70 | _bz_dynamicLengthCount = P_expr::_bz_dynamicLengthCount, |
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71 | _bz_staticLength = P_expr::_bz_staticLength; |
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72 | |
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73 | int _bz_suggestLength() const |
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74 | { return iter_._bz_suggestLength(); } |
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75 | |
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76 | bool _bz_hasFastAccess() const |
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77 | { return iter_._bz_hasFastAccess(); } |
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78 | |
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79 | T_numtype _bz_fastAccess(int i) const |
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80 | { return iter_._bz_fastAccess(i); } |
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81 | |
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82 | private: |
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83 | _bz_VecExpr(); |
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84 | |
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85 | T_expr iter_; |
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86 | }; |
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87 | |
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88 | BZ_NAMESPACE_END |
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89 | |
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90 | #endif // BZ_VECEXPRWRAP_H |
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