LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dgghd3()

lapack_int LAPACKE_dgghd3 ( int  matrix_layout,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  q,
lapack_int  ldq,
double *  z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_dgghd3.c.

41{
42 lapack_int info = 0;
43 lapack_int lwork = -1;
44 double* work = NULL;
45 double work_query;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_dgghd3", -1 );
48 return -1;
49 }
50#ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
54 return -7;
55 }
56 if( LAPACKE_dge_nancheck( matrix_layout, n, n, b, ldb ) ) {
57 return -9;
58 }
59 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
60 if( LAPACKE_dge_nancheck( matrix_layout, n, n, q, ldq ) ) {
61 return -11;
62 }
63 }
64 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
65 if( LAPACKE_dge_nancheck( matrix_layout, n, n, z, ldz ) ) {
66 return -13;
67 }
68 }
69 }
70#endif
71 /* Query optimal working array(s) size */
72 info = LAPACKE_dgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
73 a, lda, b, ldb, q, ldq, z, ldz, &work_query,
74 lwork );
75 if( info != 0 ) {
76 goto exit_level_0;
77 }
78 lwork = (lapack_int)work_query;
79 /* Allocate memory for work arrays */
80 work = (double*)LAPACKE_malloc( sizeof(double) * lwork );
81 if( work == NULL ) {
83 goto exit_level_0;
84 }
85 /* Call middle-level interface */
86 info = LAPACKE_dgghd3_work( matrix_layout, compq, compz, n, ilo, ihi,
87 a, lda, b, ldb, q, ldq, z, ldz, work, lwork );
88 /* Release memory and exit */
89 LAPACKE_free( work );
90exit_level_0:
91 if( info == LAPACK_WORK_MEMORY_ERROR ) {
92 LAPACKE_xerbla( "LAPACKE_dgghd3", info );
93 }
94 return info;
95}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_dgghd3_work(int matrix_layout, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, double *a, lapack_int lda, double *b, lapack_int ldb, double *q, lapack_int ldq, double *z, lapack_int ldz, double *work, lapack_int lwork)
#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_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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