1 | // -*- C++ -*- |
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2 | /*************************************************************************** |
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3 | * blitz/array/zip.h "zip" scalar arrays into a multicomponent array expr |
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4 | * |
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5 | * Copyright (C) 1997-2001 Todd Veldhuizen <tveldhui@oonumerics.org> |
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6 | * |
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7 | * This program is free software; you can redistribute it and/or |
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8 | * modify it under the terms of the GNU General Public License |
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9 | * as published by the Free Software Foundation; either version 2 |
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10 | * of the License, or (at your option) any later version. |
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11 | * |
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12 | * This program is distributed in the hope that it will be useful, |
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | * GNU General Public License for more details. |
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16 | * |
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17 | * Suggestions: blitz-dev@oonumerics.org |
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18 | * Bugs: blitz-bugs@oonumerics.org |
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19 | * |
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20 | * For more information, please see the Blitz++ Home Page: |
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21 | * http://oonumerics.org/blitz/ |
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22 | * |
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23 | ****************************************************************************/ |
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24 | #ifndef BZ_ARRAYZIP_H |
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25 | #define BZ_ARRAYZIP_H |
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26 | |
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27 | #ifndef BZ_ARRAY_H |
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28 | #error <blitz/array/zip.h> must be included via <blitz/array.h> |
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29 | #endif |
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30 | |
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31 | BZ_NAMESPACE(blitz) |
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32 | |
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33 | template<typename P_component, typename T1, typename T2> |
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34 | struct Zip2 { |
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35 | typedef P_component T_numtype; |
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36 | |
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37 | static inline T_numtype apply(T1 a, T2 b) |
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38 | { return T_numtype(a,b); } |
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39 | |
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40 | template<typename T_left, typename T_right> |
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41 | static inline void prettyPrint(BZ_STD_SCOPE(string) &str, |
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42 | prettyPrintFormat& format, const T_left& t1, |
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43 | const T_right& t2) |
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44 | { |
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45 | str += "zip("; |
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46 | t1.prettyPrint(str, format); |
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47 | str += ","; |
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48 | t2.prettyPrint(str, format); |
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49 | str += ")"; |
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50 | } |
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51 | }; |
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52 | |
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53 | template<typename T_component, typename T1, typename T2> |
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54 | inline _bz_ArrayExpr<_bz_ArrayExprBinaryOp< |
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55 | _bz_typename asExpr<T1>::T_expr, |
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56 | _bz_typename asExpr<T2>::T_expr, |
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57 | Zip2<T_component, |
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58 | _bz_typename asExpr<T1>::T_expr::T_numtype, |
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59 | _bz_typename asExpr<T2>::T_expr::T_numtype> > > |
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60 | zip(const T1& a, const T2& b, T_component) |
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61 | { |
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62 | return _bz_ArrayExpr<_bz_ArrayExprBinaryOp< |
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63 | _bz_typename asExpr<T1>::T_expr, |
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64 | _bz_typename asExpr<T2>::T_expr, |
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65 | Zip2<T_component, |
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66 | _bz_typename asExpr<T1>::T_expr::T_numtype, |
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67 | _bz_typename asExpr<T2>::T_expr::T_numtype> > >(a,b); |
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68 | } |
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69 | |
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70 | BZ_NAMESPACE_END |
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71 | |
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72 | #endif // BZ_ARRAYZIP_H |
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73 | |
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