LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ 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 35 of file lapacke_zgesvj.c.

40{
41 lapack_int info = 0;
42 lapack_int lwork = m+n;
43 lapack_int lrwork = MAX(6,m+n);
44 double* rwork = NULL;
45 lapack_complex_double* 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_zgesvj", -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_zge_nancheck( matrix_layout, m, n, a, lda ) ) {
58 return -7;
59 }
60 if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
61 if( LAPACKE_zge_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_double*)
69 LAPACKE_malloc( sizeof(lapack_complex_double) * lwork );
70 if( cwork == NULL ) {
72 goto exit_level_0;
73 }
74 rwork = (double*)LAPACKE_malloc( sizeof(double) * 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_zgesvj_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 );
90exit_level_1:
91 LAPACKE_free( cwork );
92exit_level_0:
93 if( info == LAPACK_WORK_MEMORY_ERROR ) {
94 LAPACKE_xerbla( "LAPACKE_zgesvj", info );
95 }
96 return info;
97}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_double
Definition: lapack.h:64
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
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_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_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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