LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sbdsqr()

lapack_int LAPACKE_sbdsqr ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  ncvt,
lapack_int  nru,
lapack_int  ncc,
float *  d,
float *  e,
float *  vt,
lapack_int  ldvt,
float *  u,
lapack_int  ldu,
float *  c,
lapack_int  ldc 
)

Definition at line 36 of file lapacke_sbdsqr.c.

40 {
41  lapack_int info = 0;
42  float* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_sbdsqr", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  /* Optionally check input matrices for NaNs */
49  if( ncc != 0 ) {
50  if( LAPACKE_sge_nancheck( matrix_layout, n, ncc, c, ldc ) ) {
51  return -13;
52  }
53  }
54  if( LAPACKE_s_nancheck( n, d, 1 ) ) {
55  return -7;
56  }
57  if( LAPACKE_s_nancheck( n-1, e, 1 ) ) {
58  return -8;
59  }
60  if( nru != 0 ) {
61  if( LAPACKE_sge_nancheck( matrix_layout, nru, n, u, ldu ) ) {
62  return -11;
63  }
64  }
65  if( ncvt != 0 ) {
66  if( LAPACKE_sge_nancheck( matrix_layout, n, ncvt, vt, ldvt ) ) {
67  return -9;
68  }
69  }
70 #endif
71  /* Allocate memory for working array(s) */
72  work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,4*n) );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_sbdsqr_work( matrix_layout, uplo, n, ncvt, nru, ncc, d, e, vt,
79  ldvt, u, ldu, c, ldc, work );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_sbdsqr", info );
85  }
86  return info;
87 }
#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
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_int LAPACKE_sbdsqr_work(int matrix_layout, char uplo, lapack_int n, lapack_int ncvt, lapack_int nru, lapack_int ncc, float *d, float *e, float *vt, lapack_int ldvt, float *u, lapack_int ldu, float *c, lapack_int ldc, float *work)
#define lapack_int
Definition: lapacke.h:47
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