/usr/include/blitz/meta/matassign.h is in libblitz0-dev 1:0.10-3.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/***************************************************************************
* blitz/meta/matassign.h TinyMatrix assignment metaprogram
*
* $Id$
*
* 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_META_MATASSIGN_H
#define BZ_META_MATASSIGN_H
BZ_NAMESPACE(blitz)
template<int N_rows, int N_columns, int I, int J>
class _bz_meta_matAssign2 {
public:
static const int go = (J < N_columns - 1) ? 1 : 0;
template<typename T_matrix, typename T_expr, typename T_updater>
static inline void f(T_matrix& mat, T_expr expr, T_updater u)
{
u.update(mat(I,J), expr(I,J));
_bz_meta_matAssign2<N_rows * go, N_columns * go, I * go, (J+1) * go>
::f(mat, expr, u);
}
};
template<>
class _bz_meta_matAssign2<0,0,0,0> {
public:
template<typename T_matrix, typename T_expr, typename T_updater>
static inline void f(T_matrix&, T_expr, T_updater)
{ }
};
template<int N_rows, int N_columns, int I>
class _bz_meta_matAssign {
public:
static const int go = (I < N_rows-1) ? 1 : 0;
template<typename T_matrix, typename T_expr, typename T_updater>
static inline void f(T_matrix& mat, T_expr expr, T_updater u)
{
_bz_meta_matAssign2<N_rows, N_columns, I, 0>::f(mat, expr, u);
_bz_meta_matAssign<N_rows * go, N_columns * go, (I+1) * go>
::f(mat, expr, u);
}
};
template<>
class _bz_meta_matAssign<0,0,0> {
public:
template<typename T_matrix, typename T_expr, typename T_updater>
static inline void f(T_matrix&, T_expr, T_updater)
{ }
};
BZ_NAMESPACE_END
#endif // BZ_META_ASSIGN_H
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