/usr/include/fflas-ffpack/fflas/fflas_faxpy.inl is in fflas-ffpack-common 2.2.2-5.
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// vim:sts=8:sw=8:ts=8:noet:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s
/* fflas/fflas_faxpy.inl
* Copyright (C) 2005 Clement Pernet
*
* Written by Clement Pernet <Clement.Pernet@imag.fr>
*
*
* ========LICENCE========
* This file is part of the library FFLAS-FFPACK.
*
* FFLAS-FFPACK 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*.
*/
#ifndef __FFLASFFPACK_faxpy_INL
#define __FFLASFFPACK_faxpy_INL
namespace FFLAS {
template<class Field>
inline void
faxpy( const Field& F, const size_t N,
const typename Field::Element a,
typename Field::ConstElement_ptr X, const size_t incX,
typename Field::Element_ptr Y, const size_t incY )
{
if (F.isZero(a))
return ;
if (F.isOne(a))
return faddin(F,N,X,incX,Y,incY);
//return fassign(F,N,X,incX,Y,incY);
if (F.isMOne(a))
return fsubin(F,N,X,incX,Y,incY);
//return fneg(F,N,X,incX,Y,incY);
typename Field::ConstElement_ptr Xi = X;
typename Field::Element_ptr Yi=Y;
for (; Xi < X+N*incX; Xi+=incX, Yi+=incY )
F.axpyin( *Yi, a, *Xi );
}
template<>
inline void
faxpy( const Givaro::DoubleDomain& , const size_t N,
const Givaro::DoubleDomain::Element a,
Givaro::DoubleDomain::ConstElement_ptr x, const size_t incx,
Givaro::DoubleDomain::Element_ptr y, const size_t incy )
{
cblas_daxpy( (int)N, a, x, (int)incx, y, (int)incy);
}
template<>
inline void
faxpy( const Givaro::FloatDomain& , const size_t N,
const Givaro::FloatDomain::Element a,
Givaro::FloatDomain::ConstElement_ptr x, const size_t incx,
Givaro::FloatDomain::Element_ptr y, const size_t incy )
{
cblas_saxpy( (int)N, a, x, (int)incx, y, (int)incy);
}
template<class Field>
inline void
faxpy( const Field& F, const size_t m, const size_t n,
const typename Field::Element a,
typename Field::ConstElement_ptr X, const size_t ldX,
typename Field::Element_ptr Y, const size_t ldY )
{
if (F.isZero(a))
return ;
if (F.isOne(a))
return faddin(F,m,n,X,ldX,Y,ldY);
//return fassign(F,m,n,X,ldX,Y,ldY);
if (F.isMOne(a))
return fsubin(F,m,n,X,ldX,Y,ldY);
//return fneg(F,m,n,X,ldX,Y,ldY);
if (n == ldX && n == ldY)
return faxpy(F,m*n,a,X,1,Y,1);
typename Field::ConstElement_ptr Xi = X;
typename Field::Element_ptr Yi=Y;
for (; Xi < X+m*ldX; Xi+=ldX, Yi+=ldY )
faxpy(F,n,a,Xi,1,Yi,1);
}
} // FFLAS
#endif // __FFLASFFPACK_faxpy_INL
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