/usr/include/blitz/array/multi.h is in libblitz0-dev 1:0.10-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | // -*- C++ -*-
/***************************************************************************
* blitz/array/multi.h Support for multicomponent arrays
*
* $Id$
*
* Copyright (C) 1997-2011 Todd Veldhuizen <tveldhui@acm.org>
*
* This file is a part of Blitz.
*
* Blitz is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* Blitz is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Blitz. If not, see <http://www.gnu.org/licenses/>.
*
* Suggestions: blitz-devel@lists.sourceforge.net
* Bugs: blitz-support@lists.sourceforge.net
*
* For more information, please see the Blitz++ Home Page:
* https://sourceforge.net/projects/blitz/
*
****************************************************************************/
#ifndef BZ_ARRAYMULTI_H
#define BZ_ARRAYMULTI_H
#ifndef BZ_ARRAY_H
#error <blitz/array/multi.h> must be included via <blitz/array.h>
#endif
BZ_NAMESPACE(blitz)
/*
* The multicomponent_traits class provides a mapping from multicomponent
* tuples to the element type they contain. For example:
*
* multicomponent_traits<complex<float> >::T_numtype is float,
* multicomponent_traits<TinyVector<int,3> >::T_numtype is int.
*
* This is used to support Array<T,N>::operator[], which extracts components
* from a multicomponent array.
*/
// By default, produce a harmless component type, and zero components.
template<typename T_component>
struct multicomponent_traits {
typedef T_component T_element;
static const int numComponents = 0;
};
// TinyVector
template<typename T_numtype, int N_rank>
struct multicomponent_traits<TinyVector<T_numtype,N_rank> > {
typedef T_numtype T_element;
static const int numComponents = N_rank;
};
// TinyMatrix
template<typename T_numtype, int N_rows, int N_cols>
struct multicomponent_traits<TinyMatrix<T_numtype,N_rows, N_cols> > {
typedef T_numtype T_element;
static const int numComponents = N_rows*N_cols;
};
#ifdef BZ_HAVE_COMPLEX
// complex<T>
template<typename T>
struct multicomponent_traits<complex<T> > {
typedef T T_element;
static const int numComponents = 2;
};
#endif
// This macro is provided so that users can register their own
// multicomponent types.
#define BZ_DECLARE_MULTICOMPONENT_TYPE(T_tuple,T,N) \
BZ_NAMESPACE(blitz) \
template<> \
struct multicomponent_traits<T_tuple > { \
typedef T T_element; \
static const int numComponents = N; \
}; \
BZ_NAMESPACE_END
BZ_NAMESPACE_END
#endif // BZ_ARRAYMULTI_H
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