1 /*
 2  *   Copyright (c) 2009, Michael Lehn
 3  *
 4  *   All rights reserved.
 5  *
 6  *   Redistribution and use in source and binary forms, with or without
 7  *   modification, are permitted provided that the following conditions
 8  *   are met:
 9  *
10  *   1) Redistributions of source code must retain the above copyright
11  *      notice, this list of conditions and the following disclaimer.
12  *   2) Redistributions in binary form must reproduce the above copyright
13  *      notice, this list of conditions and the following disclaimer in
14  *      the documentation and/or other materials provided with the
15  *      distribution.
16  *   3) Neither the name of the FLENS development group nor the names of
17  *      its contributors may be used to endorse or promote products derived
18  *      from this software without specific prior written permission.
19  *
20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifndef FLENS_BLAS_LEVEL1_SCAL_TCC
34 #define FLENS_BLAS_LEVEL1_SCAL_TCC 1
35 
36 #include <cxxblas/cxxblas.h>
37 #include <flens/aux/macros.h>
38 #include <flens/storage/storage.h>
39 #include <flens/typedefs.h>
40 
41 #ifdef FLENS_DEBUG_CLOSURES
42 #   include <flens/blas/blaslogon.h>
43 #else
44 #   include <flens/blas/blaslogoff.h>
45 #endif
46 
47 namespace flens { namespace blas {
48 
49 //-- scal (forwarding)
50 template <typename ALPHA, typename VY>
51 typename RestrictTo<IsSame<VY, typename VY::Impl>::value,
52                     void>::Type
53 scal(const ALPHA &alpha, VY &&y)
54 {
55     CHECKPOINT_ENTER;
56     scal(alpha, y);
57     CHECKPOINT_LEAVE;
58 }
59 
60 //-- scal
61 template <typename ALPHA, typename VY>
62 void
63 scal(const ALPHA &alpha, DenseVector<VY> &y)
64 {
65     FLENS_BLASLOG_SETTAG("--> ");
66     FLENS_BLASLOG_BEGIN_SCAL(alpha, y);
67 
68 #   ifdef HAVE_CXXBLAS_SCAL
69     cxxblas::scal(y.length(), alpha, y.data(), y.stride());
70 #   else
71     ASSERT(0);
72 #   endif
73 
74     FLENS_BLASLOG_END;
75     FLENS_BLASLOG_UNSETTAG;
76 }
77 
78 //-- gescal
79 template <typename ALPHA, typename MB>
80 void
81 scal(const ALPHA &alpha, GeMatrix<MB> &B)
82 {
83     FLENS_BLASLOG_SETTAG("--> ");
84     FLENS_BLASLOG_BEGIN_SCAL(alpha, B);
85 
86 #   ifdef HAVE_CXXBLAS_GESCAL
87     cxxblas::gescal(MB::order, B.numRows(), B.numCols(),
88                     alpha, B.data(), B.leadingDimension());
89 #   else
90     ASSERT(0);
91 #   endif
92 
93     FLENS_BLASLOG_END;
94     FLENS_BLASLOG_UNSETTAG;
95 }
96 
97 } } // namespace blas, flens
98 
99 #endif // FLENS_BLAS_LEVEL1_SCAL_TCC