/usr/include/blitz/meta/dot.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.
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/***************************************************************************
* blitz/meta/dot.h Tiny vector dot product 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_DOT_H
#define BZ_META_DOT_H
#ifndef BZ_PROMOTE_H
#include <blitz/promote.h>
#endif
#ifndef BZ_METAPROG_H
#include <blitz/meta/metaprog.h>
#endif
BZ_NAMESPACE(blitz)
template<int N, int I>
class _bz_meta_vectorDot {
public:
static const int loopFlag = (I < N-1) ? 1 : 0;
template<typename T_expr1, typename T_expr2>
static inline BZ_PROMOTE(_bz_typename T_expr1::T_numtype,
_bz_typename T_expr2::T_numtype)
f(const T_expr1& a, const T_expr2& b)
{
return a[I] * b[I]
+ _bz_meta_vectorDot<loopFlag * N, loopFlag * (I+1)>::f(a,b);
}
template<typename T_expr1, typename T_expr2>
static inline BZ_PROMOTE(_bz_typename T_expr1::T_numtype,
_bz_typename T_expr2::T_numtype)
f_value_ref(T_expr1 a, const T_expr2& b)
{
return a[I] * b[I]
+ _bz_meta_vectorDot<loopFlag * N, loopFlag * (I+1)>::f(a,b);
}
template<typename T_expr1, typename T_expr2>
static inline BZ_PROMOTE(_bz_typename T_expr1::T_numtype,
_bz_typename T_expr2::T_numtype)
f_ref_value(const T_expr1& a, T_expr2 b)
{
return a[I] * b[I]
+ _bz_meta_vectorDot<loopFlag * N, loopFlag * (I+1)>::f(a,b);
}
template<typename T_expr1, typename P_numtype2>
static inline BZ_PROMOTE(_bz_typename T_expr1::T_numtype,
P_numtype2)
dotWithArgs(const T_expr1& a, P_numtype2 i1, P_numtype2 i2=0,
P_numtype2 i3=0, P_numtype2 i4=0, P_numtype2 i5=0, P_numtype2 i6=0,
P_numtype2 i7=0, P_numtype2 i8=0, P_numtype2 i9=0, P_numtype2 i10=0)
{
return a[I] * i1
+ _bz_meta_vectorDot<loopFlag * N, loopFlag * (I+1)>::dotWithArgs
(a, i2, i3, i4, i5, i6, i7, i8, i9);
}
};
template<>
class _bz_meta_vectorDot<0,0> {
public:
template<typename T_expr1, typename T_expr2>
static inline _bz_meta_nullOperand f(const T_expr1&, const T_expr2&)
{ return _bz_meta_nullOperand(); }
template<typename T_expr1, typename P_numtype2>
static inline _bz_meta_nullOperand
dotWithArgs(const T_expr1& a, P_numtype2 i1, P_numtype2 i2=0,
P_numtype2 i3=0, P_numtype2 i4=0, P_numtype2 i5=0, P_numtype2 i6=0,
P_numtype2 i7=0, P_numtype2 i8=0, P_numtype2 i9=0, P_numtype2 i10=0)
{
return _bz_meta_nullOperand();
}
};
template<int N, int I, typename T_ret>
class _bz_meta_vectorDotRet {
public:
static const int loopFlag = (I < N-1) ? 1 : 0;
template<typename T_expr1, typename T_expr2>
static inline T_ret
f(const T_expr1& a, const T_expr2& b)
{
return static_cast<T_ret>(a[I]) * static_cast<T_ret>(b[I])
+ _bz_meta_vectorDotRet<loopFlag * N, loopFlag * (I+1), T_ret>::f(a,b);
}
template<typename T_expr1, typename T_expr2>
static inline T_ret
f_value_ref(T_expr1 a, const T_expr2& b)
{
return static_cast<T_ret>(a[I]) * static_cast<T_ret>(b[I])
+ _bz_meta_vectorDotRet<loopFlag * N, loopFlag * (I+1), T_ret>::f(a,b);
}
template<typename T_expr1, typename T_expr2>
static inline T_ret
f_ref_value(const T_expr1& a, T_expr2 b)
{
return static_cast<T_ret>(a[I]) * static_cast<T_ret>(b[I])
+ _bz_meta_vectorDotRet<loopFlag * N, loopFlag * (I+1), T_ret>::f(a,b);
}
template<typename T_expr1, typename P_numtype2>
static inline T_ret
dotWithArgs(const T_expr1& a, P_numtype2 i1, P_numtype2 i2=0,
P_numtype2 i3=0, P_numtype2 i4=0, P_numtype2 i5=0, P_numtype2 i6=0,
P_numtype2 i7=0, P_numtype2 i8=0, P_numtype2 i9=0, P_numtype2 i10=0)
{
return static_cast<T_ret>(a[I]) * static_cast<T_ret>(i1)
+ _bz_meta_vectorDotRet<loopFlag * N, loopFlag * (I+1), T_ret>::dotWithArgs
(a, i2, i3, i4, i5, i6, i7, i8, i9);
}
};
template<typename T_ret>
class _bz_meta_vectorDotRet<0,0, T_ret> {
public:
template<typename T_expr1, typename T_expr2>
static inline _bz_meta_nullOperand f(const T_expr1&, const T_expr2&)
{ return _bz_meta_nullOperand(); }
template<typename T_expr1, typename P_numtype2>
static inline _bz_meta_nullOperand
dotWithArgs(const T_expr1& a, P_numtype2 i1, P_numtype2 i2=0,
P_numtype2 i3=0, P_numtype2 i4=0, P_numtype2 i5=0, P_numtype2 i6=0,
P_numtype2 i7=0, P_numtype2 i8=0, P_numtype2 i9=0, P_numtype2 i10=0)
{
return _bz_meta_nullOperand();
}
};
BZ_NAMESPACE_END
#endif // BZ_META_DOT_H
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