/usr/include/blitz/meta/sum.h is in libblitz0-dev 1:0.10-3.3.
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 | // -*- C++ -*-
/***************************************************************************
* blitz/meta/sum.h TinyVector sum 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_SUM_H
#define BZ_META_SUM_H
#ifndef BZ_METAPROG_H
#include <blitz/meta/metaprog.h>
#endif
BZ_NAMESPACE(blitz)
template<int N, int I>
class _bz_meta_vectorSum {
public:
static const int loopFlag = (I < N-1) ? 1 : 0;
template<typename T_expr1>
static inline BZ_SUMTYPE(_bz_typename T_expr1::T_numtype)
f(const T_expr1& a)
{
return a[I] +
_bz_meta_vectorSum<loopFlag * N, loopFlag * (I+1)>::f(a);
}
};
template<>
class _bz_meta_vectorSum<0,0> {
public:
template<typename T_expr1>
static inline _bz_meta_nullOperand f(const T_expr1&)
{ return _bz_meta_nullOperand(); }
};
template<int N, int I, typename T_ret>
class _bz_meta_vectorSumRet {
public:
static const int loopFlag = (I < N-1) ? 1 : 0;
template<typename T_expr1>
static inline T_ret
f(const T_expr1& a)
{
return static_cast<T_ret>(a[I]) +
_bz_meta_vectorSumRet<loopFlag * N, loopFlag * (I+1), T_ret>::f(a);
}
};
template<typename T_ret>
class _bz_meta_vectorSumRet<0,0, T_ret> {
public:
template<typename T_expr1>
static inline _bz_meta_nullOperand f(const T_expr1&)
{ return _bz_meta_nullOperand(); }
};
BZ_NAMESPACE_END
#endif // BZ_META_SUM_H
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