Blaze  3.6
gesdd.h
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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 #include <blaze/util/Types.h>
46 
47 
48 //=================================================================================================
49 //
50 // LAPACK FORWARD DECLARATIONS
51 //
52 //=================================================================================================
53 
54 //*************************************************************************************************
56 #if !defined(INTEL_MKL_VERSION)
57 extern "C" {
58 
59 void sgesdd_( char* jobz, int* m, int* n, float* A, int* lda, float* s, float* U, int* ldu,
60  float* V, int* ldv, float* work, int* lwork, int* iwork, int* info,
62 void dgesdd_( char* jobz, int* m, int* n, double* A, int* lda, double* s, double* U, int* ldu,
63  double* V, int* ldv, double* work, int* lwork, int* iwork, int* info,
65 void cgesdd_( char* jobz, int* m, int* n, float* A, int* lda, float* s, float* U, int* ldu,
66  float* V, int* ldv, float* work, int* lwork, float* rwork, int* iwork, int* info,
68 void zgesdd_( char* jobz, int* m, int* n, double* A, int* lda, double* s, double* U, int* ldu,
69  double* V, int* ldv, double* work, int* lwork, double* rwork, int* iwork, int* info,
71 
72 }
73 #endif
74 
75 //*************************************************************************************************
76 
77 
78 
79 
80 namespace blaze {
81 
82 //=================================================================================================
83 //
84 // LAPACK SVD FUNCTIONS (GESDD)
85 //
86 //=================================================================================================
87 
88 //*************************************************************************************************
91 void gesdd( char jobz, int m, int n, float* A, int lda,
92  float* s, float* U, int ldu, float* V, int ldv,
93  float* work, int lwork, int* iwork, int* info );
94 
95 void gesdd( char jobz, int m, int n, double* A, int lda,
96  double* s, double* U, int ldu, double* V, int ldv,
97  double* work, int lwork, int* iwork, int* info );
98 
99 void gesdd( char jobz, int m, int n, complex<float>* A, int lda, float* s,
100  complex<float>* U, int ldu, complex<float>* V, int ldv,
101  complex<float>* work, int lwork, float* rwork, int* iwork, int* info );
102 
103 void gesdd( char jobz, int m, int n, complex<double>* A, int lda, double* s,
104  complex<double>* U, int ldu, complex<double>* V, int ldv,
105  complex<double>* work, int lwork, double* rwork, int* iwork, int* info );
107 //*************************************************************************************************
108 
109 
110 //*************************************************************************************************
174 inline void gesdd( char jobz, int m, int n, float* A, int lda,
175  float* s, float* U, int ldu, float* V, int ldv,
176  float* work, int lwork, int* iwork, int* info )
177 {
178 #if defined(INTEL_MKL_VERSION)
179  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
180 #endif
181 
182  sgesdd_( &jobz, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, iwork, info,
184 }
185 //*************************************************************************************************
186 
187 
188 //*************************************************************************************************
252 inline void gesdd( char jobz, int m, int n, double* A, int lda,
253  double* s, double* U, int ldu, double* V, int ldv,
254  double* work, int lwork, int* iwork, int* info )
255 {
256 #if defined(INTEL_MKL_VERSION)
257  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
258 #endif
259 
260  dgesdd_( &jobz, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, iwork, info,
262 }
263 //*************************************************************************************************
264 
265 
266 //*************************************************************************************************
331 inline void gesdd( char jobz, int m, int n, complex<float>* A, int lda, float* s,
332  complex<float>* U, int ldu, complex<float>* V, int ldv,
333  complex<float>* work, int lwork, float* rwork, int* iwork, int* info )
334 {
335  BLAZE_STATIC_ASSERT( sizeof( complex<float> ) == 2UL*sizeof( float ) );
336 
337 #if defined(INTEL_MKL_VERSION)
338  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
339  using ET = MKL_Complex8;
340 #else
341  using ET = float;
342 #endif
343 
344  cgesdd_( &jobz, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
345  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
346  reinterpret_cast<ET*>( work ), &lwork, rwork, iwork, info,
348 }
349 //*************************************************************************************************
350 
351 
352 //*************************************************************************************************
417 inline void gesdd( char jobz, int m, int n, complex<double>* A, int lda, double* s,
418  complex<double>* U, int ldu, complex<double>* V, int ldv,
419  complex<double>* work, int lwork, double* rwork, int* iwork, int* info )
420 {
421  BLAZE_STATIC_ASSERT( sizeof( complex<double> ) == 2UL*sizeof( double ) );
422 
423 #if defined(INTEL_MKL_VERSION)
424  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
425  using ET = MKL_Complex16;
426 #else
427  using ET = double;
428 #endif
429 
430  zgesdd_( &jobz, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
431  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
432  reinterpret_cast<ET*>( work ), &lwork, rwork, iwork, info,
434 }
435 //*************************************************************************************************
436 
437 } // namespace blaze
438 
439 #endif
Header file for basic type definitions.
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:174
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
Size type of the Blaze library.