LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgesvj()

lapack_int LAPACKE_zgesvj ( 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,
double *  stat 
)

Definition at line 36 of file lapacke_zgesvj.c.

41 {
42  lapack_int info = 0;
43  lapack_int lwork = m+n;
44  lapack_int lrwork = MAX(6,m+n);
45  double* rwork = NULL;
46  lapack_complex_double* cwork = NULL;
47  lapack_int i;
48  lapack_int nrows_v;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_zgesvj", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  /* Optionally check input matrices for NaNs */
55  nrows_v = LAPACKE_lsame( jobv, 'v' ) ? MAX(0,n) :
56  ( LAPACKE_lsame( jobv, 'a' ) ? MAX(0,mv) : 0);
57  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
58  return -7;
59  }
60  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
61  if( LAPACKE_zge_nancheck( matrix_layout, nrows_v, n, v, ldv ) ) {
62  return -11;
63  }
64  }
65 #endif
66  /* Allocate memory for working array(s) */
67  cwork = (lapack_complex_double*)
68  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
69  if( cwork == NULL ) {
71  goto exit_level_0;
72  }
73  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
74  if( rwork == NULL ) {
76  goto exit_level_1;
77  }
78  rwork[0] = stat[0]; /* Significant if jobu = 'c' */
79  /* Call middle-level interface */
80  info = LAPACKE_zgesvj_work( matrix_layout, joba, jobu, jobv, m, n, a, lda,
81  sva, mv, v, ldv, cwork, lwork, rwork, lrwork );
82  /* Backup significant data from working array(s) */
83  for( i=0; i<6; i++ ) {
84  stat[i] = rwork[i];
85  }
86 
87  /* Release memory and exit */
88  LAPACKE_free( rwork );
89 exit_level_1:
90  LAPACKE_free( cwork );
91 exit_level_0:
92  if( info == LAPACK_WORK_MEMORY_ERROR ) {
93  LAPACKE_xerbla( "LAPACKE_zgesvj", info );
94  }
95  return info;
96 }
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)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
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