LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dbdsqr()

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

Definition at line 35 of file lapacke_dbdsqr.c.

40{
41 lapack_int info = 0;
42 double* work = NULL;
43 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44 LAPACKE_xerbla( "LAPACKE_dbdsqr", -1 );
45 return -1;
46 }
47#ifndef LAPACK_DISABLE_NAN_CHECK
48 if( LAPACKE_get_nancheck() ) {
49 /* Optionally check input matrices for NaNs */
50 if( ncc != 0 ) {
51 if( LAPACKE_dge_nancheck( matrix_layout, n, ncc, c, ldc ) ) {
52 return -13;
53 }
54 }
55 if( LAPACKE_d_nancheck( n, d, 1 ) ) {
56 return -7;
57 }
58 if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
59 return -8;
60 }
61 if( nru != 0 ) {
62 if( LAPACKE_dge_nancheck( matrix_layout, nru, n, u, ldu ) ) {
63 return -11;
64 }
65 }
66 if( ncvt != 0 ) {
67 if( LAPACKE_dge_nancheck( matrix_layout, n, ncvt, vt, ldvt ) ) {
68 return -9;
69 }
70 }
71 }
72#endif
73 /* Allocate memory for working array(s) */
74 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,4*n) );
75 if( work == NULL ) {
77 goto exit_level_0;
78 }
79 /* Call middle-level interface */
80 info = LAPACKE_dbdsqr_work( matrix_layout, uplo, n, ncvt, nru, ncc, d, e, vt,
81 ldvt, u, ldu, c, ldc, work );
82 /* Release memory and exit */
83 LAPACKE_free( work );
84exit_level_0:
85 if( info == LAPACK_WORK_MEMORY_ERROR ) {
86 LAPACKE_xerbla( "LAPACKE_dbdsqr", info );
87 }
88 return info;
89}
#define lapack_int
Definition: lapack.h:87
#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
lapack_int LAPACKE_dbdsqr_work(int matrix_layout, char uplo, lapack_int n, lapack_int ncvt, lapack_int nru, lapack_int ncc, double *d, double *e, double *vt, lapack_int ldvt, double *u, lapack_int ldu, double *c, lapack_int ldc, double *work)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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