| 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 | * $Id$ |
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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 | #ifndef BZ_ARRAYZIP_H |
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| 32 | #define BZ_ARRAYZIP_H |
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| 33 | |
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| 34 | #ifndef BZ_ARRAY_H |
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| 35 | #error <blitz/array/zip.h> must be included via <blitz/array.h> |
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| 36 | #endif |
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| 37 | |
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| 38 | BZ_NAMESPACE(blitz) |
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| 39 | |
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| 40 | template<typename P_component, typename T1, typename T2> |
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| 41 | struct Zip2 { |
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| 42 | typedef P_component T_numtype; |
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| 43 | |
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| 44 | static inline T_numtype apply(T1 a, T2 b) |
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| 45 | { return T_numtype(a,b); } |
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| 46 | |
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| 47 | template<typename T_left, typename T_right> |
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| 48 | static inline void prettyPrint(BZ_STD_SCOPE(string) &str, |
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| 49 | prettyPrintFormat& format, const T_left& t1, |
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| 50 | const T_right& t2) |
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| 51 | { |
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| 52 | str += "zip("; |
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| 53 | t1.prettyPrint(str, format); |
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| 54 | str += ","; |
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| 55 | t2.prettyPrint(str, format); |
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| 56 | str += ")"; |
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| 57 | } |
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| 58 | }; |
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| 59 | |
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| 60 | template<typename T_component, typename T1, typename T2> |
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| 61 | inline _bz_ArrayExpr<_bz_ArrayExprBinaryOp< |
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| 62 | _bz_typename asExpr<T1>::T_expr, |
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| 63 | _bz_typename asExpr<T2>::T_expr, |
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| 64 | Zip2<T_component, |
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| 65 | _bz_typename asExpr<T1>::T_expr::T_numtype, |
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| 66 | _bz_typename asExpr<T2>::T_expr::T_numtype> > > |
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| 67 | zip(const T1& a, const T2& b, T_component) |
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| 68 | { |
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| 69 | return _bz_ArrayExpr<_bz_ArrayExprBinaryOp< |
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| 70 | _bz_typename asExpr<T1>::T_expr, |
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| 71 | _bz_typename asExpr<T2>::T_expr, |
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| 72 | Zip2<T_component, |
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| 73 | _bz_typename asExpr<T1>::T_expr::T_numtype, |
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| 74 | _bz_typename asExpr<T2>::T_expr::T_numtype> > >(a,b); |
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| 75 | } |
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| 76 | |
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| 77 | BZ_NAMESPACE_END |
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| 78 | |
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| 79 | #endif // BZ_ARRAYZIP_H |
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| 80 | |
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