LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_chseqr()

lapack_int LAPACKE_chseqr ( int  matrix_layout,
char  job,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_float h,
lapack_int  ldh,
lapack_complex_float w,
lapack_complex_float z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_chseqr.c.

40{
41 lapack_int info = 0;
42 lapack_int lwork = -1;
43 lapack_complex_float* work = NULL;
44 lapack_complex_float work_query;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_chseqr", -1 );
47 return -1;
48 }
49#ifndef LAPACK_DISABLE_NAN_CHECK
50 if( LAPACKE_get_nancheck() ) {
51 /* Optionally check input matrices for NaNs */
52 if( LAPACKE_cge_nancheck( matrix_layout, n, n, h, ldh ) ) {
53 return -7;
54 }
55 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
56 if( LAPACKE_cge_nancheck( matrix_layout, n, n, z, ldz ) ) {
57 return -10;
58 }
59 }
60 }
61#endif
62 /* Query optimal working array(s) size */
63 info = LAPACKE_chseqr_work( matrix_layout, job, compz, n, ilo, ihi, h, ldh,
64 w, z, ldz, &work_query, lwork );
65 if( info != 0 ) {
66 goto exit_level_0;
67 }
68 lwork = LAPACK_C2INT( work_query );
69 /* Allocate memory for work arrays */
70 work = (lapack_complex_float*)
71 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork );
72 if( work == NULL ) {
74 goto exit_level_0;
75 }
76 /* Call middle-level interface */
77 info = LAPACKE_chseqr_work( matrix_layout, job, compz, n, ilo, ihi, h, ldh,
78 w, z, ldz, work, lwork );
79 /* Release memory and exit */
80 LAPACKE_free( work );
81exit_level_0:
82 if( info == LAPACK_WORK_MEMORY_ERROR ) {
83 LAPACKE_xerbla( "LAPACKE_chseqr", info );
84 }
85 return info;
86}
#define lapack_int
Definition: lapack.h:87
#define lapack_complex_float
Definition: lapack.h:46
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACK_C2INT(x)
Definition: lapacke.h:49
#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_int LAPACKE_chseqr_work(int matrix_layout, char job, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, lapack_complex_float *h, lapack_int ldh, lapack_complex_float *w, lapack_complex_float *z, lapack_int ldz, lapack_complex_float *work, lapack_int lwork)
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_cge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *a, lapack_int lda)
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