LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ 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 36 of file lapacke_sgeevx.c.

42 {
43  lapack_int info = 0;
44  lapack_int lwork = -1;
45  lapack_int* iwork = NULL;
46  float* work = NULL;
47  float work_query;
48  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
49  LAPACKE_xerbla( "LAPACKE_sgeevx", -1 );
50  return -1;
51  }
52 #ifndef LAPACK_DISABLE_NAN_CHECK
53  /* Optionally check input matrices for NaNs */
54  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
55  return -7;
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
60  iwork = (lapack_int*)
61  LAPACKE_malloc( sizeof(lapack_int) * MAX(1,2*n-2) );
62  if( iwork == NULL ) {
64  goto exit_level_0;
65  }
66  }
67  /* Query optimal working array(s) size */
68  info = LAPACKE_sgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
69  lda, wr, wi, vl, ldvl, vr, ldvr, ilo, ihi,
70  scale, abnrm, rconde, rcondv, &work_query,
71  lwork, iwork );
72  if( info != 0 ) {
73  goto exit_level_1;
74  }
75  lwork = (lapack_int)work_query;
76  /* Allocate memory for work arrays */
77  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
78  if( work == NULL ) {
80  goto exit_level_1;
81  }
82  /* Call middle-level interface */
83  info = LAPACKE_sgeevx_work( matrix_layout, balanc, jobvl, jobvr, sense, n, a,
84  lda, wr, wi, vl, ldvl, vr, ldvr, ilo, ihi,
85  scale, abnrm, rconde, rcondv, work, lwork,
86  iwork );
87  /* Release memory and exit */
88  LAPACKE_free( work );
89 exit_level_1:
90  if( LAPACKE_lsame( sense, 'b' ) || LAPACKE_lsame( sense, 'v' ) ) {
91  LAPACKE_free( iwork );
92  }
93 exit_level_0:
94  if( info == LAPACK_WORK_MEMORY_ERROR ) {
95  LAPACKE_xerbla( "LAPACKE_sgeevx", info );
96  }
97  return info;
98 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
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:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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