1 | // -*- C++ -*- |
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2 | /*************************************************************************** |
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3 | * blitz/update.h Declaration of the _bz_XXXX updater classes |
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4 | * |
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5 | * $Id$ |
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6 | * |
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7 | * Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org> |
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8 | * |
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9 | * This file is a part of Blitz. |
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10 | * |
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11 | * Blitz is free software: you can redistribute it and/or modify |
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12 | * it under the terms of the GNU Lesser General Public License |
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13 | * as published by the Free Software Foundation, either version 3 |
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14 | * of the License, or (at your option) any later version. |
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15 | * |
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16 | * Blitz is distributed in the hope that it will be useful, |
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | * GNU Lesser General Public License for more details. |
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20 | * |
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21 | * You should have received a copy of the GNU Lesser General Public |
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22 | * License along with Blitz. If not, see <http://www.gnu.org/licenses/>. |
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23 | * |
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24 | * Suggestions: blitz-devel@lists.sourceforge.net |
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25 | * Bugs: blitz-support@lists.sourceforge.net |
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26 | * |
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27 | * For more information, please see the Blitz++ Home Page: |
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28 | * https://sourceforge.net/projects/blitz/ |
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29 | * |
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30 | ***************************************************************************/ |
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31 | |
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32 | #ifndef BZ_UPDATE_H |
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33 | #define BZ_UPDATE_H |
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34 | |
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35 | #include <blitz/blitz.h> |
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36 | |
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37 | BZ_NAMESPACE(blitz) |
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38 | |
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39 | class _bz_updater_base { }; |
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40 | |
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41 | #define BZ_DECL_UPDATER(name,op,symbol) \ |
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42 | template<typename T_dest, typename T_source> \ |
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43 | class name : public _bz_updater_base { \ |
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44 | public: \ |
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45 | template<typename T1, typename T2> struct updateCast { \ |
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46 | typedef name<T1, T2> T_updater; \ |
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47 | }; \ |
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48 | \ |
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49 | static inline void update(T_dest& restrict x, T_source y) \ |
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50 | { x op y; } \ |
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51 | static void prettyPrint(BZ_STD_SCOPE(string) &str) \ |
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52 | { str += symbol; } \ |
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53 | } |
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54 | |
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55 | template<typename T_dest, typename T_source> |
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56 | class _bz_update : public _bz_updater_base { |
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57 | public: |
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58 | |
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59 | /** Traits class used to get an updater with different types. */ |
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60 | template<typename T1, typename T2> struct updateCast { |
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61 | typedef _bz_update<T1, T2> T_updater; |
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62 | }; |
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63 | |
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64 | static inline void update(T_dest& restrict x, T_source y) |
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65 | { x = /*(X)*/y; } |
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66 | |
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67 | static void prettyPrint(BZ_STD_SCOPE(string) &str) |
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68 | { str += "="; } |
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69 | }; |
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70 | |
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71 | BZ_DECL_UPDATER(_bz_plus_update, +=, "+="); |
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72 | BZ_DECL_UPDATER(_bz_minus_update, -=, "-="); |
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73 | BZ_DECL_UPDATER(_bz_multiply_update, *=, "*="); |
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74 | BZ_DECL_UPDATER(_bz_divide_update, /=, "/="); |
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75 | BZ_DECL_UPDATER(_bz_mod_update, %=, "%="); |
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76 | BZ_DECL_UPDATER(_bz_xor_update, ^=, "^="); |
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77 | BZ_DECL_UPDATER(_bz_bitand_update, &=, "&="); |
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78 | BZ_DECL_UPDATER(_bz_bitor_update, |=, "|="); |
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79 | BZ_DECL_UPDATER(_bz_shiftl_update, <<=, "<<="); |
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80 | BZ_DECL_UPDATER(_bz_shiftr_update, >>=, ">>="); |
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81 | |
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82 | BZ_NAMESPACE_END |
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83 | |
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84 | #endif // BZ_UPDATE_H |
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85 | |
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