LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgesvj()

lapack_int LAPACKE_cgesvj ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
lapack_int  m,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
float *  sva,
lapack_int  mv,
lapack_complex_float v,
lapack_int  ldv,
float *  stat 
)

Definition at line 35 of file lapacke_cgesvj.c.

40 {
41  lapack_int info = 0;
42  lapack_int lwork = m+n;
43  lapack_int lrwork = MAX(6,m+n);
44  float* rwork = NULL;
45  lapack_complex_float* cwork = NULL;
46  lapack_int i;
47  lapack_int nrows_v;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_cgesvj", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  if( LAPACKE_get_nancheck() ) {
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_cge_nancheck( matrix_layout, m, n, a, lda ) ) {
58  return -7;
59  }
60  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
61  if( LAPACKE_cge_nancheck( matrix_layout, nrows_v, n, v, ldv ) ) {
62  return -11;
63  }
64  }
65  }
66 #endif
67  /* Allocate memory for working array(s) */
68  cwork = (lapack_complex_float*)
69  LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
70  if( cwork == NULL ) {
72  goto exit_level_0;
73  }
74  rwork = (float*)LAPACKE_malloc( sizeof(float) * lrwork );
75  if( rwork == NULL ) {
77  goto exit_level_1;
78  }
79  rwork[0] = stat[0]; /* Significant if jobu = 'c' */
80  /* Call middle-level interface */
81  info = LAPACKE_cgesvj_work( matrix_layout, joba, jobu, jobv, m, n, a, lda,
82  sva, mv, v, ldv, cwork, lwork, rwork, lrwork );
83  /* Backup significant data from working array(s) */
84  for( i=0; i<6; i++ ) {
85  stat[i] = rwork[i];
86  }
87 
88  /* Release memory and exit */
89  LAPACKE_free( rwork );
90 exit_level_1:
91  LAPACKE_free( cwork );
92 exit_level_0:
93  if( info == LAPACK_WORK_MEMORY_ERROR ) {
94  LAPACKE_xerbla( "LAPACKE_cgesvj", info );
95  }
96  return info;
97 }
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_int LAPACKE_cgesvj_work(int matrix_layout, char joba, char jobu, char jobv, lapack_int m, lapack_int n, lapack_complex_float *a, lapack_int lda, float *sva, lapack_int mv, lapack_complex_float *v, lapack_int ldv, lapack_complex_float *cwork, lapack_int lwork, float *rwork, lapack_int lrwork)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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