LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zgelsd()

lapack_int LAPACKE_zgelsd ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double *  a,
lapack_int  lda,
lapack_complex_double *  b,
lapack_int  ldb,
double *  s,
double  rcond,
lapack_int *  rank 
)

Definition at line 35 of file lapacke_zgelsd.c.

40{
41 lapack_int info = 0;
42 lapack_int lwork = -1;
43 /* Additional scalars declarations for work arrays */
44 lapack_int liwork;
45 lapack_int lrwork;
46 lapack_int* iwork = NULL;
47 double* rwork = NULL;
48 lapack_complex_double* work = NULL;
49 lapack_int iwork_query;
50 double rwork_query;
51 lapack_complex_double work_query;
52 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
53 LAPACKE_xerbla( "LAPACKE_zgelsd", -1 );
54 return -1;
55 }
56#ifndef LAPACK_DISABLE_NAN_CHECK
57 if( LAPACKE_get_nancheck() ) {
58 /* Optionally check input matrices for NaNs */
59 if( LAPACKE_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
60 return -5;
61 }
62 if( LAPACKE_zge_nancheck( matrix_layout, MAX(m,n), nrhs, b, ldb ) ) {
63 return -7;
64 }
65 if( LAPACKE_d_nancheck( 1, &rcond, 1 ) ) {
66 return -10;
67 }
68 }
69#endif
70 /* Query optimal working array(s) size */
71 info = LAPACKE_zgelsd_work( matrix_layout, m, n, nrhs, a, lda, b, ldb, s,
72 rcond, rank, &work_query, lwork, &rwork_query,
73 &iwork_query );
74 if( info != 0 ) {
75 goto exit_level_0;
76 }
77 liwork = iwork_query;
78 lrwork = (lapack_int)rwork_query;
79 lwork = LAPACK_Z2INT( work_query );
80 /* Allocate memory for work arrays */
81 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * liwork );
82 if( iwork == NULL ) {
83 info = LAPACK_WORK_MEMORY_ERROR;
84 goto exit_level_0;
85 }
86 rwork = (double*)LAPACKE_malloc( sizeof(double) * lrwork );
87 if( rwork == NULL ) {
88 info = LAPACK_WORK_MEMORY_ERROR;
89 goto exit_level_1;
90 }
91 work = (lapack_complex_double*)
92 LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
93 if( work == NULL ) {
94 info = LAPACK_WORK_MEMORY_ERROR;
95 goto exit_level_2;
96 }
97 /* Call middle-level interface */
98 info = LAPACKE_zgelsd_work( matrix_layout, m, n, nrhs, a, lda, b, ldb, s,
99 rcond, rank, work, lwork, rwork, iwork );
100 /* Release memory and exit */
101 LAPACKE_free( work );
102exit_level_2:
103 LAPACKE_free( rwork );
104exit_level_1:
105 LAPACKE_free( iwork );
106exit_level_0:
107 if( info == LAPACK_WORK_MEMORY_ERROR ) {
108 LAPACKE_xerbla( "LAPACKE_zgelsd", info );
109 }
110 return info;
111}
lapack_int
#define lapack_int
Definition: lapack.h:87
lapack_complex_double
#define lapack_complex_double
Definition: lapack.h:64
LAPACK_WORK_MEMORY_ERROR
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_get_nancheck
int LAPACKE_get_nancheck(void)
Definition: lapacke_nancheck.c:42
LAPACKE_zgelsd_work
lapack_int LAPACKE_zgelsd_work(int matrix_layout, lapack_int m, lapack_int n, lapack_int nrhs, lapack_complex_double *a, lapack_int lda, lapack_complex_double *b, lapack_int ldb, double *s, double rcond, lapack_int *rank, lapack_complex_double *work, lapack_int lwork, double *rwork, lapack_int *iwork)
Definition: lapacke_zgelsd_work.c:35
LAPACK_Z2INT
#define LAPACK_Z2INT(x)
Definition: lapacke.h:50
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_zge_nancheck
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
Definition: lapacke_zge_nancheck.c:36
LAPACKE_d_nancheck
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
Definition: lapacke_d_nancheck.c:36
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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