LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches

◆ LAPACKE_shgeqz()

lapack_int LAPACKE_shgeqz ( int  matrix_layout,
char  job,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
float *  h,
lapack_int  ldh,
float *  t,
lapack_int  ldt,
float *  alphar,
float *  alphai,
float *  beta,
float *  q,
lapack_int  ldq,
float *  z,
lapack_int  ldz 
)

Definition at line 35 of file lapacke_shgeqz.c.

40{
41 lapack_int info = 0;
42 lapack_int lwork = -1;
43 float* work = NULL;
44 float work_query;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_shgeqz", -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_sge_nancheck( matrix_layout, n, n, h, ldh ) ) {
53 return -8;
54 }
55 if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
56 if( LAPACKE_sge_nancheck( matrix_layout, n, n, q, ldq ) ) {
57 return -15;
58 }
59 }
60 if( LAPACKE_sge_nancheck( matrix_layout, n, n, t, ldt ) ) {
61 return -10;
62 }
63 if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
64 if( LAPACKE_sge_nancheck( matrix_layout, n, n, z, ldz ) ) {
65 return -17;
66 }
67 }
68 }
69#endif
70 /* Query optimal working array(s) size */
71 info = LAPACKE_shgeqz_work( matrix_layout, job, compq, compz, n, ilo, ihi, h,
72 ldh, t, ldt, alphar, alphai, beta, q, ldq, z,
73 ldz, &work_query, lwork );
74 if( info != 0 ) {
75 goto exit_level_0;
76 }
77 lwork = (lapack_int)work_query;
78 /* Allocate memory for work arrays */
79 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
80 if( work == NULL ) {
82 goto exit_level_0;
83 }
84 /* Call middle-level interface */
85 info = LAPACKE_shgeqz_work( matrix_layout, job, compq, compz, n, ilo, ihi, h,
86 ldh, t, ldt, alphar, alphai, beta, q, ldq, z,
87 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_shgeqz", 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_shgeqz_work(int matrix_layout, char job, char compq, char compz, lapack_int n, lapack_int ilo, lapack_int ihi, float *h, lapack_int ldh, float *t, lapack_int ldt, float *alphar, float *alphai, float *beta, float *q, lapack_int ldq, float *z, lapack_int ldz, float *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_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
Here is the call graph for this function: