LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zpteqr_work()

lapack_int LAPACKE_zpteqr_work ( int  matrix_layout,
char  compz,
lapack_int  n,
double *  d,
double *  e,
lapack_complex_double z,
lapack_int  ldz,
double *  work 
)

Definition at line 35 of file lapacke_zpteqr_work.c.

38{
39 lapack_int info = 0;
40 if( matrix_layout == LAPACK_COL_MAJOR ) {
41 /* Call LAPACK function and adjust info */
42 LAPACK_zpteqr( &compz, &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 lapack_complex_double* z_t = NULL;
49 /* Check leading dimension(s) */
50 if( ldz < n ) {
51 info = -7;
52 LAPACKE_xerbla( "LAPACKE_zpteqr_work", info );
53 return info;
54 }
55 /* Allocate memory for temporary array(s) */
57 LAPACKE_malloc( sizeof(lapack_complex_double) * ldz_t * MAX(1,n) );
58 if( z_t == NULL ) {
60 goto exit_level_0;
61 }
62 /* Transpose input matrices */
63 if( LAPACKE_lsame( compz, 'v' ) ) {
64 LAPACKE_zge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
65 }
66 /* Call LAPACK function and adjust info */
67 LAPACK_zpteqr( &compz, &n, d, e, z_t, &ldz_t, work, &info );
68 if( info < 0 ) {
69 info = info - 1;
70 }
71 /* Transpose output matrices */
72 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
73 /* Release memory and exit */
74 LAPACKE_free( z_t );
75exit_level_0:
76 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
77 LAPACKE_xerbla( "LAPACKE_zpteqr_work", info );
78 }
79 } else {
80 info = -1;
81 LAPACKE_xerbla( "LAPACKE_zpteqr_work", info );
82 }
83 return info;
84}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_zpteqr(...)
Definition: lapack.h:14436
#define lapack_complex_double
Definition: lapack.h:64
#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)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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