LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgges()

lapack_int LAPACKE_sgges ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_S_SELECT3  selctg,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
lapack_int sdim,
float *  alphar,
float *  alphai,
float *  beta,
float *  vsl,
lapack_int  ldvsl,
float *  vsr,
lapack_int  ldvsr 
)

Definition at line 35 of file lapacke_sgges.c.

41{
42 lapack_int info = 0;
43 lapack_int lwork = -1;
44 lapack_logical* bwork = NULL;
45 float* work = NULL;
46 float work_query;
47 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48 LAPACKE_xerbla( "LAPACKE_sgges", -1 );
49 return -1;
50 }
51#ifndef LAPACK_DISABLE_NAN_CHECK
52 if( LAPACKE_get_nancheck() ) {
53 /* Optionally check input matrices for NaNs */
54 if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
55 return -7;
56 }
57 if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
58 return -9;
59 }
60 }
61#endif
62 /* Allocate memory for working array(s) */
63 if( LAPACKE_lsame( sort, 's' ) ) {
64 bwork = (lapack_logical*)
65 LAPACKE_malloc( sizeof(lapack_logical) * MAX(1,n) );
66 if( bwork == NULL ) {
68 goto exit_level_0;
69 }
70 }
71 /* Query optimal working array(s) size */
72 info = LAPACKE_sgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
73 lda, b, ldb, sdim, alphar, alphai, beta, vsl,
74 ldvsl, vsr, ldvsr, &work_query, lwork, bwork );
75 if( info != 0 ) {
76 goto exit_level_1;
77 }
78 lwork = (lapack_int)work_query;
79 /* Allocate memory for work arrays */
80 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
81 if( work == NULL ) {
83 goto exit_level_1;
84 }
85 /* Call middle-level interface */
86 info = LAPACKE_sgges_work( matrix_layout, jobvsl, jobvsr, sort, selctg, n, a,
87 lda, b, ldb, sdim, alphar, alphai, beta, vsl,
88 ldvsl, vsr, ldvsr, work, lwork, bwork );
89 /* Release memory and exit */
90 LAPACKE_free( work );
91exit_level_1:
92 if( LAPACKE_lsame( sort, 's' ) ) {
93 LAPACKE_free( bwork );
94 }
95exit_level_0:
96 if( info == LAPACK_WORK_MEMORY_ERROR ) {
97 LAPACKE_xerbla( "LAPACKE_sgges", info );
98 }
99 return info;
100}
#define lapack_int
Definition: lapack.h:87
#define lapack_logical
Definition: lapack.h:103
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
lapack_int LAPACKE_sgges_work(int matrix_layout, char jobvsl, char jobvsr, char sort, LAPACK_S_SELECT3 selctg, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, lapack_int *sdim, float *alphar, float *alphai, float *beta, float *vsl, lapack_int ldvsl, float *vsr, lapack_int ldvsr, float *work, lapack_int lwork, lapack_logical *bwork)
#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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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