LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dstev_work()

lapack_int LAPACKE_dstev_work ( int  matrix_layout,
char  jobz,
lapack_int  n,
double *  d,
double *  e,
double *  z,
lapack_int  ldz,
double *  work 
)

Definition at line 35 of file lapacke_dstev_work.c.

38{
39 lapack_int info = 0;
40 if( matrix_layout == LAPACK_COL_MAJOR ) {
41 /* Call LAPACK function and adjust info */
42 LAPACK_dstev( &jobz, &n, d, e, z, &ldz, work, &info );
43 if( info < 0 ) {
44 info = info - 1;
45 }
46 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47 lapack_int ldz_t = MAX(1,n);
48 double* z_t = NULL;
49 /* Check leading dimension(s) */
50 if( ldz < n ) {
51 info = -7;
52 LAPACKE_xerbla( "LAPACKE_dstev_work", info );
53 return info;
54 }
55 /* Allocate memory for temporary array(s) */
56 if( LAPACKE_lsame( jobz, 'v' ) ) {
57 z_t = (double*)LAPACKE_malloc( sizeof(double) * ldz_t * MAX(1,n) );
58 if( z_t == NULL ) {
60 goto exit_level_0;
61 }
62 }
63 /* Call LAPACK function and adjust info */
64 LAPACK_dstev( &jobz, &n, d, e, z_t, &ldz_t, work, &info );
65 if( info < 0 ) {
66 info = info - 1;
67 }
68 /* Transpose output matrices */
69 if( LAPACKE_lsame( jobz, 'v' ) ) {
70 LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
71 }
72 /* Release memory and exit */
73 if( LAPACKE_lsame( jobz, 'v' ) ) {
74 LAPACKE_free( z_t );
75 }
76exit_level_0:
77 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
78 LAPACKE_xerbla( "LAPACKE_dstev_work", info );
79 }
80 } else {
81 info = -1;
82 LAPACKE_xerbla( "LAPACKE_dstev_work", info );
83 }
84 return info;
85}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_dstev(...)
Definition: lapack.h:16555
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
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
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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