1 /*
2 * Copyright (c) 2012, 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 CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC
34 #define CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC 1
35
36 #include <cstdio>
37 #include <cxxblas/aux/aux.h>
38
39 namespace cxxblas {
40
41 template <typename IndexType, typename ALPHA, typename X, typename Y>
42 void
43 raxpy_generic(IndexType n, const ALPHA &alpha, const X *x,
44 IndexType incX, Y *y, IndexType incY)
45 {
46 for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) {
47 y[iY] += x[iX]/alpha;
48 }
49 }
50
51 template <typename IndexType, typename ALPHA, typename X, typename Y>
52 void
53 raxpy(IndexType n, const ALPHA &alpha, const X *x, IndexType incX,
54 Y *y, IndexType incY)
55 {
56 CXXBLAS_DEBUG_OUT("raxpy_generic");
57
58 if (incX<0) {
59 x -= incX*(n-1);
60 }
61 if (incY<0) {
62 y -= incY*(n-1);
63 }
64 raxpy_generic(n, alpha, x, incX, y, incY);
65 }
66
67 } // namespace cxxblas
68
69 #endif // CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC
2 * Copyright (c) 2012, 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 CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC
34 #define CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC 1
35
36 #include <cstdio>
37 #include <cxxblas/aux/aux.h>
38
39 namespace cxxblas {
40
41 template <typename IndexType, typename ALPHA, typename X, typename Y>
42 void
43 raxpy_generic(IndexType n, const ALPHA &alpha, const X *x,
44 IndexType incX, Y *y, IndexType incY)
45 {
46 for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) {
47 y[iY] += x[iX]/alpha;
48 }
49 }
50
51 template <typename IndexType, typename ALPHA, typename X, typename Y>
52 void
53 raxpy(IndexType n, const ALPHA &alpha, const X *x, IndexType incX,
54 Y *y, IndexType incY)
55 {
56 CXXBLAS_DEBUG_OUT("raxpy_generic");
57
58 if (incX<0) {
59 x -= incX*(n-1);
60 }
61 if (incY<0) {
62 y -= incY*(n-1);
63 }
64 raxpy_generic(n, alpha, x, incX, y, incY);
65 }
66
67 } // namespace cxxblas
68
69 #endif // CXXBLAS_LEVEL1EXTENSIONS_RAXPY_TCC