LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgeevx()

lapack_int LAPACKE_sgeevx ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  wr,
float *  wi,
float *  vl,
lapack_int  ldvl,
float *  vr,
lapack_int  ldvr,
lapack_int ilo,
lapack_int ihi,
float *  scale,
float *  abnrm,
float *  rconde,
float *  rcondv 
)

Definition at line 35 of file lapacke_sgeevx.c.

41{
42 lapack_int info = 0;
43 lapack_int lwork = -1;
44 lapack_int* iwork = 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_sgeevx", -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 }
58#endif
59 /* Allocate memory for working array(s) */
60 if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
61 iwork = (lapack_int*)
62 LAPACKE_malloc( sizeof(lapack_int) * MAX(1,2*n-2) );
63 if( iwork == NULL ) {
65 goto exit_level_0;
66 }
67 }
68 /* Query optimal working array(s) size */
69 info = LAPACKE_sgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
70 lda, wr, wi, vl, ldvl, vr, ldvr, ilo, ihi,
71 scale, abnrm, rconde, rcondv, &work_query,
72 lwork, iwork );
73 if( info != 0 ) {
74 goto exit_level_1;
75 }
76 lwork = (lapack_int)work_query;
77 /* Allocate memory for work arrays */
78 work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
79 if( work == NULL ) {
81 goto exit_level_1;
82 }
83 /* Call middle-level interface */
84 info = LAPACKE_sgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
85 lda, wr, wi, vl, ldvl, vr, ldvr, ilo, ihi,
86 scale, abnrm, rconde, rcondv, work, lwork,
87 iwork );
88 /* Release memory and exit */
89 LAPACKE_free( work );
90exit_level_1:
91 if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
92 LAPACKE_free( iwork );
93 }
94exit_level_0:
95 if( info == LAPACK_WORK_MEMORY_ERROR ) {
96 LAPACKE_xerbla( "LAPACKE_sgeevx", info );
97 }
98 return info;
99}
#define lapack_int
Definition: lapack.h:87
lapack_int LAPACKE_sgeevx_work(int matrix_layout, char balanc, char jobvl, char jobvr, char sense, lapack_int n, float *a, lapack_int lda, float *wr, float *wi, float *vl, lapack_int ldvl, float *vr, lapack_int ldvr, lapack_int *ilo, lapack_int *ihi, float *scale, float *abnrm, float *rconde, float *rcondv, float *work, lapack_int lwork, lapack_int *iwork)
#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)
#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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