LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgesvj_work()

lapack_int LAPACKE_zgesvj_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
double *  sva,
lapack_int  mv,
lapack_complex_double v,
lapack_int  ldv,
lapack_complex_double cwork,
lapack_int  lwork,
double *  rwork,
lapack_int  lrwork 
)

Definition at line 35 of file lapacke_zgesvj_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_zgesvj( &joba, &jobu, &jobv, &m, &n, a, &lda, sva, &mv, v, &ldv,
47  cwork, &lwork, rwork, &lrwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int nrows_v = LAPACKE_lsame( jobv, 'v' ) ? MAX(0,n) :
53  ( LAPACKE_lsame( jobv, 'a' ) ? MAX(0,mv) : 0);
54  lapack_int lda_t = MAX(1,m);
55  lapack_int ldv_t = MAX(1,nrows_v);
56  lapack_complex_double* a_t = NULL;
57  lapack_complex_double* v_t = NULL;
58  /* Check leading dimension(s) */
59  if( lda < n ) {
60  info = -8;
61  LAPACKE_xerbla( "LAPACKE_zgesvj_work", info );
62  return info;
63  }
64  if( ldv < n ) {
65  info = -12;
66  LAPACKE_xerbla( "LAPACKE_zgesvj_work", info );
67  return info;
68  }
69  /* Allocate memory for temporary array(s) */
70  a_t = (lapack_complex_double*)
71  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
72  if( a_t == NULL ) {
74  goto exit_level_0;
75  }
76  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
77  v_t = (lapack_complex_double*)
78  LAPACKE_malloc( sizeof(lapack_complex_double) * ldv_t * MAX(1,n) );
79  if( v_t == NULL ) {
81  goto exit_level_1;
82  }
83  }
84  /* Transpose input matrices */
85  LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
86  if( LAPACKE_lsame( jobv, 'a' ) ) {
87  LAPACKE_zge_trans( matrix_layout, nrows_v, n, v, ldv, v_t, ldv_t );
88  }
89  /* Call LAPACK function and adjust info */
90  LAPACK_zgesvj( &joba, &jobu, &jobv, &m, &n, a_t, &lda_t, sva, &mv, v_t,
91  &ldv_t, cwork, &lwork, rwork, &lrwork, &info );
92  if( info < 0 ) {
93  info = info - 1;
94  }
95  /* Transpose output matrices */
96  LAPACKE_zge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
97  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
98  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nrows_v, n, v_t, ldv_t, v,
99  ldv );
100  }
101  /* Release memory and exit */
102  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
103  LAPACKE_free( v_t );
104  }
105 exit_level_1:
106  LAPACKE_free( a_t );
107 exit_level_0:
108  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
109  LAPACKE_xerbla( "LAPACKE_zgesvj_work", info );
110  }
111  } else {
112  info = -1;
113  LAPACKE_xerbla( "LAPACKE_zgesvj_work", info );
114  }
115  return info;
116 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zgesvj(...)
Definition: lapack.h:3693
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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