LAPACK  3.8.0
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  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  nrows_v = LAPACKE_lsame( jobv, 'v' ) ? MAX(0,n) :
57  ( LAPACKE_lsame( jobv, 'a' ) ? MAX(0,mv) : 0);
58  if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
59  return -7;
60  }
61  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
62  if( LAPACKE_zge_nancheck( matrix_layout, nrows_v, n, v, ldv ) ) {
63  return -11;
64  }
65  }
66  }
67 #endif
68  /* Allocate memory for working array(s) */
69  cwork = (lapack_complex_double*)
70  LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
71  if( cwork == NULL ) {
73  goto exit_level_0;
74  }
75  rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
76  if( rwork == NULL ) {
78  goto exit_level_1;
79  }
80  rwork[0] = stat[0]; /* Significant if jobu = 'c' */
81  /* Call middle-level interface */
82  info = LAPACKE_zgesvj_work( matrix_layout, joba, jobu, jobv, m, n, a, lda,
83  sva, mv, v, ldv, cwork, lwork, rwork, lrwork );
84  /* Backup significant data from working array(s) */
85  for( i=0; i<6; i++ ) {
86  stat[i] = rwork[i];
87  }
88 
89  /* Release memory and exit */
90  LAPACKE_free( rwork );
91 exit_level_1:
92  LAPACKE_free( cwork );
93 exit_level_0:
94  if( info == LAPACK_WORK_MEMORY_ERROR ) {
95  LAPACKE_xerbla( "LAPACKE_zgesvj", info );
96  }
97  return info;
98 }
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)
int LAPACKE_get_nancheck()
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