LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgejsv_work()

lapack_int LAPACKE_zgejsv_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
char  jobr,
char  jobt,
char  jobp,
lapack_int  m,
lapack_int  n,
lapack_complex_double a,
lapack_int  lda,
double *  sva,
lapack_complex_double u,
lapack_int  ldu,
lapack_complex_double v,
lapack_int  ldv,
lapack_complex_double cwork,
lapack_int  lwork,
double *  rwork,
lapack_int  lrwork,
lapack_int iwork 
)

Definition at line 35 of file lapacke_zgejsv_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_zgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a,
48  &lda, sva, u, &ldu, v, &ldv, cwork, &lwork, rwork, &lrwork,
49  iwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int nu = LAPACKE_lsame( jobu, 'n' ) ? 1 : m;
55  lapack_int nv = LAPACKE_lsame( jobv, 'n' ) ? 1 : n;
56  lapack_int ncols_u = LAPACKE_lsame( jobu, 'n' ) ? 1 :
57  LAPACKE_lsame( jobu, 'f' ) ? m : n;
58  lapack_int lda_t = MAX(1,m);
59  lapack_int ldu_t = MAX(1,nu);
60  lapack_int ldv_t = MAX(1,nv);
61  lapack_complex_double* a_t = NULL;
62  lapack_complex_double* u_t = NULL;
63  lapack_complex_double* v_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -11;
67  LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
68  return info;
69  }
70  if( ldu < ncols_u ) {
71  info = -14;
72  LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
73  return info;
74  }
75  if( ldv < n ) {
76  info = -16;
77  LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
78  return info;
79  }
80  /* Allocate memory for temporary array(s) */
81  a_t = (lapack_complex_double*)
82  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
83  if( a_t == NULL ) {
85  goto exit_level_0;
86  }
87  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
88  LAPACKE_lsame( jobu, 'w' ) ) {
89  u_t = (lapack_complex_double*)
90  LAPACKE_malloc( sizeof(lapack_complex_double) * ldu_t * MAX(1,ncols_u) );
91  if( u_t == NULL ) {
93  goto exit_level_1;
94  }
95  }
96  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
97  LAPACKE_lsame( jobv, 'w' ) ) {
98  v_t = (lapack_complex_double*)
99  LAPACKE_malloc( sizeof(lapack_complex_double) * ldv_t * MAX(1,n) );
100  if( v_t == NULL ) {
102  goto exit_level_2;
103  }
104  }
105  /* Transpose input matrices */
106  LAPACKE_zge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
107  /* Call LAPACK function and adjust info */
108  LAPACK_zgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a_t,
109  &lda_t, sva, u_t, &ldu_t, v_t, &ldv_t, cwork, &lwork,
110  rwork, &lrwork, iwork, &info );
111  if( info < 0 ) {
112  info = info - 1;
113  }
114  /* Transpose output matrices */
115  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
116  LAPACKE_lsame( jobu, 'w' ) ) {
117  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nu, ncols_u, u_t, ldu_t, u, ldu );
118  }
119  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
120  LAPACKE_lsame( jobv, 'w' ) ) {
121  LAPACKE_zge_trans( LAPACK_COL_MAJOR, nv, n, v_t, ldv_t, v, ldv );
122  }
123  /* Release memory and exit */
124  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
125  LAPACKE_lsame( jobv, 'w' ) ) {
126  LAPACKE_free( v_t );
127  }
128 exit_level_2:
129  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
130  LAPACKE_lsame( jobu, 'w' ) ) {
131  LAPACKE_free( u_t );
132  }
133 exit_level_1:
134  LAPACKE_free( a_t );
135 exit_level_0:
136  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
137  LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
138  }
139  } else {
140  info = -1;
141  LAPACKE_xerbla( "LAPACKE_zgejsv_work", info );
142  }
143  return info;
144 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_zgejsv(...)
Definition: lapack.h:2089
#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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