gesdd.h
Go to the documentation of this file.
1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_LAPACK_CLAPACK_GESDD_H_
36 #define _BLAZE_MATH_LAPACK_CLAPACK_GESDD_H_
37 
38 
39 //*************************************************************************************************
40 // Includes
41 //*************************************************************************************************
42 
43 #include <blaze/util/Complex.h>
45 
46 
47 //=================================================================================================
48 //
49 // LAPACK FORWARD DECLARATIONS
50 //
51 //=================================================================================================
52 
53 //*************************************************************************************************
55 #if !defined(INTEL_MKL_VERSION)
56 extern "C" {
57 
58 void sgesdd_( char* jobz, int* m, int* n, float* A, int* lda, float* s, float* U, int* ldu, float* V, int* ldv, float* work, int* lwork, int* iwork, int* info );
59 void dgesdd_( char* jobz, int* m, int* n, double* A, int* lda, double* s, double* U, int* ldu, double* V, int* ldv, double* work, int* lwork, int* iwork, int* info );
60 void cgesdd_( char* jobz, int* m, int* n, float* A, int* lda, float* s, float* U, int* ldu, float* V, int* ldv, float* work, int* lwork, float* rwork, int* iwork, int* info );
61 void zgesdd_( char* jobz, int* m, int* n, double* A, int* lda, double* s, double* U, int* ldu, double* V, int* ldv, double* work, int* lwork, double* rwork, int* iwork, int* info );
62 
63 }
64 #endif
65 
66 //*************************************************************************************************
67 
68 
69 
70 
71 namespace blaze {
72 
73 //=================================================================================================
74 //
75 // LAPACK SVD FUNCTIONS (GESDD)
76 //
77 //=================================================================================================
78 
79 //*************************************************************************************************
82 inline void gesdd( char jobz, int m, int n, float* A, int lda,
83  float* s, float* U, int ldu, float* V, int ldv,
84  float* work, int lwork, int* iwork, int* info );
85 
86 inline void gesdd( char jobz, int m, int n, double* A, int lda,
87  double* s, double* U, int ldu, double* V, int ldv,
88  double* work, int lwork, int* iwork, int* info );
89 
90 inline void gesdd( char jobz, int m, int n, complex<float>* A, int lda, float* s,
91  complex<float>* U, int ldu, complex<float>* V, int ldv,
92  complex<float>* work, int lwork, float* rwork, int* iwork, int* info );
93 
94 inline void gesdd( char jobz, int m, int n, complex<double>* A, int lda, double* s,
95  complex<double>* U, int ldu, complex<double>* V, int ldv,
96  complex<double>* work, int lwork, double* rwork, int* iwork, int* info );
98 //*************************************************************************************************
99 
100 
101 //*************************************************************************************************
165 inline void gesdd( char jobz, int m, int n, float* A, int lda,
166  float* s, float* U, int ldu, float* V, int ldv,
167  float* work, int lwork, int* iwork, int* info )
168 {
169 #if defined(INTEL_MKL_VERSION)
170  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
171 #endif
172 
173  sgesdd_( &jobz, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, iwork, info );
174 }
175 //*************************************************************************************************
176 
177 
178 //*************************************************************************************************
242 inline void gesdd( char jobz, int m, int n, double* A, int lda,
243  double* s, double* U, int ldu, double* V, int ldv,
244  double* work, int lwork, int* iwork, int* info )
245 {
246 #if defined(INTEL_MKL_VERSION)
247  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
248 #endif
249 
250  dgesdd_( &jobz, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, iwork, info );
251 }
252 //*************************************************************************************************
253 
254 
255 //*************************************************************************************************
320 inline void gesdd( char jobz, int m, int n, complex<float>* A, int lda, float* s,
321  complex<float>* U, int ldu, complex<float>* V, int ldv,
322  complex<float>* work, int lwork, float* rwork, int* iwork, int* info )
323 {
324  BLAZE_STATIC_ASSERT( sizeof( complex<float> ) == 2UL*sizeof( float ) );
325 
326 #if defined(INTEL_MKL_VERSION)
327  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
328  using ET = MKL_Complex8;
329 #else
330  using ET = float;
331 #endif
332 
333  cgesdd_( &jobz, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
334  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
335  reinterpret_cast<ET*>( work ), &lwork, rwork, iwork, info );
336 }
337 //*************************************************************************************************
338 
339 
340 //*************************************************************************************************
405 inline void gesdd( char jobz, int m, int n, complex<double>* A, int lda, double* s,
406  complex<double>* U, int ldu, complex<double>* V, int ldv,
407  complex<double>* work, int lwork, double* rwork, int* iwork, int* info )
408 {
409  BLAZE_STATIC_ASSERT( sizeof( complex<double> ) == 2UL*sizeof( double ) );
410 
411 #if defined(INTEL_MKL_VERSION)
412  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
413  using ET = MKL_Complex16;
414 #else
415  using ET = double;
416 #endif
417 
418  zgesdd_( &jobz, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
419  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
420  reinterpret_cast<ET*>( work ), &lwork, rwork, iwork, info );
421 }
422 //*************************************************************************************************
423 
424 } // namespace blaze
425 
426 #endif
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Compile time assertion.
void gesdd(char jobz, int m, int n, float *A, int lda, float *s, float *U, int ldu, float *V, int ldv, float *work, int lwork, int *iwork, int *info)
LAPACK kernel for the singular value decomposition (SVD) of the given dense general single precision ...
Definition: gesdd.h:165
Header file for the complex data type.
#define BLAZE_STATIC_ASSERT(expr)
Compile time assertion macro.In case of an invalid compile time expression, a compilation error is cr...
Definition: StaticAssert.h:112