level2_cplx_impl.h
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1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2009-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
5 //
6 // This Source Code Form is subject to the terms of the Mozilla
7 // Public License v. 2.0. If a copy of the MPL was not distributed
8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
9 
10 #include "common.h"
11 
19 int EIGEN_BLAS_FUNC(hemv)(const char *uplo, const int *n, const RealScalar *palpha, const RealScalar *pa, const int *lda,
20  const RealScalar *px, const int *incx, const RealScalar *pbeta, RealScalar *py, const int *incy)
21 {
22  typedef void (*functype)(int, const Scalar*, int, const Scalar*, Scalar*, Scalar);
23  static const functype func[2] = {
24  // array index: UP
25  (internal::selfadjoint_matrix_vector_product<Scalar,int,ColMajor,Upper,false,false>::run),
26  // array index: LO
27  (internal::selfadjoint_matrix_vector_product<Scalar,int,ColMajor,Lower,false,false>::run),
28  };
29 
30  const Scalar* a = reinterpret_cast<const Scalar*>(pa);
31  const Scalar* x = reinterpret_cast<const Scalar*>(px);
32  Scalar* y = reinterpret_cast<Scalar*>(py);
33  Scalar alpha = *reinterpret_cast<const Scalar*>(palpha);
34  Scalar beta = *reinterpret_cast<const Scalar*>(pbeta);
35 
36  // check arguments
37  int info = 0;
38  if(UPLO(*uplo)==INVALID) info = 1;
39  else if(*n<0) info = 2;
40  else if(*lda<std::max(1,*n)) info = 5;
41  else if(*incx==0) info = 7;
42  else if(*incy==0) info = 10;
43  if(info)
44  return xerbla_(SCALAR_SUFFIX_UP"HEMV ",&info,6);
45 
46  if(*n==0)
47  return 1;
48 
49  const Scalar* actual_x = get_compact_vector(x,*n,*incx);
50  Scalar* actual_y = get_compact_vector(y,*n,*incy);
51 
52  if(beta!=Scalar(1))
53  {
54  if(beta==Scalar(0)) make_vector(actual_y, *n).setZero();
55  else make_vector(actual_y, *n) *= beta;
56  }
57 
58  if(alpha!=Scalar(0))
59  {
60  int code = UPLO(*uplo);
61  if(code>=2 || func[code]==0)
62  return 0;
63 
64  func[code](*n, a, *lda, actual_x, actual_y, alpha);
65  }
66 
67  if(actual_x!=x) delete[] actual_x;
68  if(actual_y!=y) delete[] copy_back(actual_y,y,*n,*incy);
69 
70  return 1;
71 }
72 
80 // int EIGEN_BLAS_FUNC(hbmv)(char *uplo, int *n, int *k, RealScalar *alpha, RealScalar *a, int *lda,
81 // RealScalar *x, int *incx, RealScalar *beta, RealScalar *y, int *incy)
82 // {
83 // return 1;
84 // }
85 
93 // int EIGEN_BLAS_FUNC(hpmv)(char *uplo, int *n, RealScalar *alpha, RealScalar *ap, RealScalar *x, int *incx, RealScalar *beta, RealScalar *y, int *incy)
94 // {
95 // return 1;
96 // }
97 
105 int EIGEN_BLAS_FUNC(hpr)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *pap)
106 {
107  typedef void (*functype)(int, Scalar*, const Scalar*, RealScalar);
108  static const functype func[2] = {
109  // array index: UP
110  (internal::selfadjoint_packed_rank1_update<Scalar,int,ColMajor,Upper,false,Conj>::run),
111  // array index: LO
112  (internal::selfadjoint_packed_rank1_update<Scalar,int,ColMajor,Lower,false,Conj>::run),
113  };
114 
115  Scalar* x = reinterpret_cast<Scalar*>(px);
116  Scalar* ap = reinterpret_cast<Scalar*>(pap);
117  RealScalar alpha = *palpha;
118 
119  int info = 0;
120  if(UPLO(*uplo)==INVALID) info = 1;
121  else if(*n<0) info = 2;
122  else if(*incx==0) info = 5;
123  if(info)
124  return xerbla_(SCALAR_SUFFIX_UP"HPR ",&info,6);
125 
126  if(alpha==Scalar(0))
127  return 1;
128 
129  Scalar* x_cpy = get_compact_vector(x, *n, *incx);
130 
131  int code = UPLO(*uplo);
132  if(code>=2 || func[code]==0)
133  return 0;
134 
135  func[code](*n, ap, x_cpy, alpha);
136 
137  if(x_cpy!=x) delete[] x_cpy;
138 
139  return 1;
140 }
141 
149 int EIGEN_BLAS_FUNC(hpr2)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pap)
150 {
151  typedef void (*functype)(int, Scalar*, const Scalar*, const Scalar*, Scalar);
152  static const functype func[2] = {
153  // array index: UP
154  (internal::packed_rank2_update_selector<Scalar,int,Upper>::run),
155  // array index: LO
156  (internal::packed_rank2_update_selector<Scalar,int,Lower>::run),
157  };
158 
159  Scalar* x = reinterpret_cast<Scalar*>(px);
160  Scalar* y = reinterpret_cast<Scalar*>(py);
161  Scalar* ap = reinterpret_cast<Scalar*>(pap);
162  Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
163 
164  int info = 0;
165  if(UPLO(*uplo)==INVALID) info = 1;
166  else if(*n<0) info = 2;
167  else if(*incx==0) info = 5;
168  else if(*incy==0) info = 7;
169  if(info)
170  return xerbla_(SCALAR_SUFFIX_UP"HPR2 ",&info,6);
171 
172  if(alpha==Scalar(0))
173  return 1;
174 
175  Scalar* x_cpy = get_compact_vector(x, *n, *incx);
176  Scalar* y_cpy = get_compact_vector(y, *n, *incy);
177 
178  int code = UPLO(*uplo);
179  if(code>=2 || func[code]==0)
180  return 0;
181 
182  func[code](*n, ap, x_cpy, y_cpy, alpha);
183 
184  if(x_cpy!=x) delete[] x_cpy;
185  if(y_cpy!=y) delete[] y_cpy;
186 
187  return 1;
188 }
189 
197 int EIGEN_BLAS_FUNC(her)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *pa, int *lda)
198 {
199  typedef void (*functype)(int, Scalar*, int, const Scalar*, const Scalar*, const Scalar&);
200  static const functype func[2] = {
201  // array index: UP
202  (selfadjoint_rank1_update<Scalar,int,ColMajor,Upper,false,Conj>::run),
203  // array index: LO
204  (selfadjoint_rank1_update<Scalar,int,ColMajor,Lower,false,Conj>::run),
205  };
206 
207  Scalar* x = reinterpret_cast<Scalar*>(px);
208  Scalar* a = reinterpret_cast<Scalar*>(pa);
209  RealScalar alpha = *reinterpret_cast<RealScalar*>(palpha);
210 
211  int info = 0;
212  if(UPLO(*uplo)==INVALID) info = 1;
213  else if(*n<0) info = 2;
214  else if(*incx==0) info = 5;
215  else if(*lda<std::max(1,*n)) info = 7;
216  if(info)
217  return xerbla_(SCALAR_SUFFIX_UP"HER ",&info,6);
218 
219  if(alpha==RealScalar(0))
220  return 1;
221 
222  Scalar* x_cpy = get_compact_vector(x, *n, *incx);
223 
224  int code = UPLO(*uplo);
225  if(code>=2 || func[code]==0)
226  return 0;
227 
228  func[code](*n, a, *lda, x_cpy, x_cpy, alpha);
229 
230  matrix(a,*n,*n,*lda).diagonal().imag().setZero();
231 
232  if(x_cpy!=x) delete[] x_cpy;
233 
234  return 1;
235 }
236 
244 int EIGEN_BLAS_FUNC(her2)(char *uplo, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa, int *lda)
245 {
246  typedef void (*functype)(int, Scalar*, int, const Scalar*, const Scalar*, Scalar);
247  static const functype func[2] = {
248  // array index: UP
249  (internal::rank2_update_selector<Scalar,int,Upper>::run),
250  // array index: LO
251  (internal::rank2_update_selector<Scalar,int,Lower>::run),
252  };
253 
254  Scalar* x = reinterpret_cast<Scalar*>(px);
255  Scalar* y = reinterpret_cast<Scalar*>(py);
256  Scalar* a = reinterpret_cast<Scalar*>(pa);
257  Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
258 
259  int info = 0;
260  if(UPLO(*uplo)==INVALID) info = 1;
261  else if(*n<0) info = 2;
262  else if(*incx==0) info = 5;
263  else if(*incy==0) info = 7;
264  else if(*lda<std::max(1,*n)) info = 9;
265  if(info)
266  return xerbla_(SCALAR_SUFFIX_UP"HER2 ",&info,6);
267 
268  if(alpha==Scalar(0))
269  return 1;
270 
271  Scalar* x_cpy = get_compact_vector(x, *n, *incx);
272  Scalar* y_cpy = get_compact_vector(y, *n, *incy);
273 
274  int code = UPLO(*uplo);
275  if(code>=2 || func[code]==0)
276  return 0;
277 
278  func[code](*n, a, *lda, x_cpy, y_cpy, alpha);
279 
280  matrix(a,*n,*n,*lda).diagonal().imag().setZero();
281 
282  if(x_cpy!=x) delete[] x_cpy;
283  if(y_cpy!=y) delete[] y_cpy;
284 
285  return 1;
286 }
287 
295 int EIGEN_BLAS_FUNC(geru)(int *m, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa, int *lda)
296 {
297  Scalar* x = reinterpret_cast<Scalar*>(px);
298  Scalar* y = reinterpret_cast<Scalar*>(py);
299  Scalar* a = reinterpret_cast<Scalar*>(pa);
300  Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
301 
302  int info = 0;
303  if(*m<0) info = 1;
304  else if(*n<0) info = 2;
305  else if(*incx==0) info = 5;
306  else if(*incy==0) info = 7;
307  else if(*lda<std::max(1,*m)) info = 9;
308  if(info)
309  return xerbla_(SCALAR_SUFFIX_UP"GERU ",&info,6);
310 
311  if(alpha==Scalar(0))
312  return 1;
313 
314  Scalar* x_cpy = get_compact_vector(x,*m,*incx);
315  Scalar* y_cpy = get_compact_vector(y,*n,*incy);
316 
317  internal::general_rank1_update<Scalar,int,ColMajor,false,false>::run(*m, *n, a, *lda, x_cpy, y_cpy, alpha);
318 
319  if(x_cpy!=x) delete[] x_cpy;
320  if(y_cpy!=y) delete[] y_cpy;
321 
322  return 1;
323 }
324 
332 int EIGEN_BLAS_FUNC(gerc)(int *m, int *n, RealScalar *palpha, RealScalar *px, int *incx, RealScalar *py, int *incy, RealScalar *pa, int *lda)
333 {
334  Scalar* x = reinterpret_cast<Scalar*>(px);
335  Scalar* y = reinterpret_cast<Scalar*>(py);
336  Scalar* a = reinterpret_cast<Scalar*>(pa);
337  Scalar alpha = *reinterpret_cast<Scalar*>(palpha);
338 
339  int info = 0;
340  if(*m<0) info = 1;
341  else if(*n<0) info = 2;
342  else if(*incx==0) info = 5;
343  else if(*incy==0) info = 7;
344  else if(*lda<std::max(1,*m)) info = 9;
345  if(info)
346  return xerbla_(SCALAR_SUFFIX_UP"GERC ",&info,6);
347 
348  if(alpha==Scalar(0))
349  return 1;
350 
351  Scalar* x_cpy = get_compact_vector(x,*m,*incx);
352  Scalar* y_cpy = get_compact_vector(y,*n,*incy);
353 
354  internal::general_rank1_update<Scalar,int,ColMajor,false,Conj>::run(*m, *n, a, *lda, x_cpy, y_cpy, alpha);
355 
356  if(x_cpy!=x) delete[] x_cpy;
357  if(y_cpy!=y) delete[] y_cpy;
358 
359  return 1;
360 }
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