Blaze  3.6
gesvd.h
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1 //=================================================================================================
33 //=================================================================================================
34 
35 #ifndef _BLAZE_MATH_LAPACK_CLAPACK_GESVD_H_
36 #define _BLAZE_MATH_LAPACK_CLAPACK_GESVD_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 sgesvd_( char* jobu, char* jobv, int* m, int* n, float* A, int* lda, float* s, float* U,
60  int* ldu, float* V, int* ldv, float* work, int* lwork, int* info,
62 void dgesvd_( char* jobu, char* jobv, int* m, int* n, double* A, int* lda, double* s, double* U,
63  int* ldu, double* V, int* ldv, double* work, int* lwork, int* info,
65 void cgesvd_( char* jobu, char* jobv, int* m, int* n, float* A, int* lda, float* s, float* U,
66  int* ldu, float* V, int* ldv, float* work, int* lwork, float* rwork, int* info,
68 void zgesvd_( char* jobu, char* jobv, int* m, int* n, double* A, int* lda, double* s, double* U,
69  int* ldu, double* V, int* ldv, double* work, int* lwork, double* rwork, int* info,
71 
72 }
73 #endif
74 
75 //*************************************************************************************************
76 
77 
78 
79 
80 namespace blaze {
81 
82 //=================================================================================================
83 //
84 // LAPACK SVD FUNCTIONS (GESVD)
85 //
86 //=================================================================================================
87 
88 //*************************************************************************************************
91 void gesvd( char jobu, char jobv, 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* info );
94 
95 void gesvd( char jobu, char jobv, 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* info );
98 
99 void gesvd( char jobu, char jobv, int m, int n, complex<float>* A, int lda,
100  float* s, complex<float>* U, int ldu, complex<float>* V, int ldv,
101  complex<float>* work, int lwork, float* rwork, int* info );
102 
103 void gesvd( char jobu, char jobv, int m, int n, complex<double>* A, int lda,
104  double* s, complex<double>* U, int ldu, complex<double>* V, int ldv,
105  complex<double>* work, int lwork, double* rwork, int* info );
107 //*************************************************************************************************
108 
109 
110 //*************************************************************************************************
172 inline void gesvd( char jobu, char jobv, int m, int n, float* A, int lda,
173  float* s, float* U, int ldu, float* V, int ldv,
174  float* work, int lwork, int* info )
175 {
176 #if defined(INTEL_MKL_VERSION)
177  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
178 #endif
179 
180  sgesvd_( &jobu, &jobv, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, info,
182 }
183 //*************************************************************************************************
184 
185 
186 //*************************************************************************************************
248 inline void gesvd( char jobu, char jobv, int m, int n, double* A, int lda,
249  double* s, double* U, int ldu, double* V, int ldv,
250  double* work, int lwork, int* info )
251 {
252 #if defined(INTEL_MKL_VERSION)
253  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
254 #endif
255 
256  dgesvd_( &jobu, &jobv, &m, &n, A, &lda, s, U, &ldu, V, &ldv, work, &lwork, info,
258 }
259 //*************************************************************************************************
260 
261 
262 //*************************************************************************************************
325 inline void gesvd( char jobu, char jobv, int m, int n, complex<float>* A, int lda,
326  float* s, complex<float>* U, int ldu, complex<float>* V, int ldv,
327  complex<float>* work, int lwork, float* rwork, int* info )
328 {
329  BLAZE_STATIC_ASSERT( sizeof( complex<float> ) == 2UL*sizeof( float ) );
330 
331 #if defined(INTEL_MKL_VERSION)
332  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
333  using ET = MKL_Complex8;
334 #else
335  using ET = float;
336 #endif
337 
338  cgesvd_( &jobu, &jobv, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
339  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
340  reinterpret_cast<ET*>( work ), &lwork, rwork, info,
342 }
343 //*************************************************************************************************
344 
345 
346 //*************************************************************************************************
409 inline void gesvd( char jobu, char jobv, int m, int n, complex<double>* A, int lda,
410  double* s, complex<double>* U, int ldu, complex<double>* V, int ldv,
411  complex<double>* work, int lwork, double* rwork, int* info )
412 {
413  BLAZE_STATIC_ASSERT( sizeof( complex<double> ) == 2UL*sizeof( double ) );
414 
415 #if defined(INTEL_MKL_VERSION)
416  BLAZE_STATIC_ASSERT( sizeof( MKL_INT ) == sizeof( int ) );
417  using ET = MKL_Complex16;
418 #else
419  using ET = double;
420 #endif
421 
422  zgesvd_( &jobu, &jobv, &m, &n, reinterpret_cast<ET*>( A ), &lda, s,
423  reinterpret_cast<ET*>( U ), &ldu, reinterpret_cast<ET*>( V ), &ldv,
424  reinterpret_cast<ET*>( work ), &lwork, rwork, info,
426 }
427 //*************************************************************************************************
428 
429 } // namespace blaze
430 
431 #endif
void gesvd(char jobu, char jobv, int m, int n, float *A, int lda, float *s, float *U, int ldu, float *V, int ldv, float *work, int lwork, int *info)
LAPACK kernel for the singular value decomposition (SVD) of the given dense general single precision ...
Definition: gesvd.h:172
Header file for basic type definitions.
Namespace of the Blaze C++ math library.
Definition: Blaze.h:58
Compile time assertion.
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.