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 CXXBLAS_LEVEL2_SPR_TCC
34 #define CXXBLAS_LEVEL2_SPR_TCC 1
35
36 #include <complex>
37 #include <cxxblas/level1/level1.h>
38
39 namespace cxxblas {
40
41 template <typename IndexType, typename ALPHA, typename VX, typename MA>
42 void
43 spr_generic(StorageOrder order, StorageUpLo upLo,
44 IndexType n,
45 const ALPHA &alpha,
46 const VX *x, IndexType incX,
47 MA *A)
48 {
49 if (order==ColMajor) {
50 upLo = (upLo==Upper) ? Lower : Upper;
51 spr_generic(RowMajor, upLo, n, alpha, x, incX, A);
52 return;
53 }
54 #ifdef CXXBLAS_USE_XERBLA
55 // insert error check here
56 #endif
57 if (upLo==Upper) {
58 for (IndexType i=0, iX=0; i<n; ++i, iX+=incX) {
59 axpy_generic(n-i, alpha*x[iX], x+iX, incX,
60 A+i*(2*n-i+1)/2, IndexType(1));
61 }
62 } else {
63 for (IndexType i=0, iX=0; i<n; ++i, iX+=incX) {
64 axpy_generic(i+1, alpha*x[iX], x, incX,
65 A+i*(i+1)/2, IndexType(1));
66 }
67 }
68 }
69
70 template <typename IndexType, typename ALPHA, typename VX, typename MA>
71 void
72 spr(StorageOrder order, StorageUpLo upLo,
73 IndexType n,
74 const ALPHA &alpha,
75 const VX *x, IndexType incX,
76 MA *A)
77 {
78 CXXBLAS_DEBUG_OUT("spr_generic");
79
80 if (incX<0) {
81 x -= incX*(n-1);
82 }
83 spr_generic(order, upLo, n, alpha, x, incX, A);
84 }
85
86 } // namespace cxxblas
87
88 #endif // CXXBLAS_LEVEL2_SPR_TCC
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 CXXBLAS_LEVEL2_SPR_TCC
34 #define CXXBLAS_LEVEL2_SPR_TCC 1
35
36 #include <complex>
37 #include <cxxblas/level1/level1.h>
38
39 namespace cxxblas {
40
41 template <typename IndexType, typename ALPHA, typename VX, typename MA>
42 void
43 spr_generic(StorageOrder order, StorageUpLo upLo,
44 IndexType n,
45 const ALPHA &alpha,
46 const VX *x, IndexType incX,
47 MA *A)
48 {
49 if (order==ColMajor) {
50 upLo = (upLo==Upper) ? Lower : Upper;
51 spr_generic(RowMajor, upLo, n, alpha, x, incX, A);
52 return;
53 }
54 #ifdef CXXBLAS_USE_XERBLA
55 // insert error check here
56 #endif
57 if (upLo==Upper) {
58 for (IndexType i=0, iX=0; i<n; ++i, iX+=incX) {
59 axpy_generic(n-i, alpha*x[iX], x+iX, incX,
60 A+i*(2*n-i+1)/2, IndexType(1));
61 }
62 } else {
63 for (IndexType i=0, iX=0; i<n; ++i, iX+=incX) {
64 axpy_generic(i+1, alpha*x[iX], x, incX,
65 A+i*(i+1)/2, IndexType(1));
66 }
67 }
68 }
69
70 template <typename IndexType, typename ALPHA, typename VX, typename MA>
71 void
72 spr(StorageOrder order, StorageUpLo upLo,
73 IndexType n,
74 const ALPHA &alpha,
75 const VX *x, IndexType incX,
76 MA *A)
77 {
78 CXXBLAS_DEBUG_OUT("spr_generic");
79
80 if (incX<0) {
81 x -= incX*(n-1);
82 }
83 spr_generic(order, upLo, n, alpha, x, incX, A);
84 }
85
86 } // namespace cxxblas
87
88 #endif // CXXBLAS_LEVEL2_SPR_TCC