LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_zgeevx_work ( int  matrix_layout,
char  balanc,
char  jobvl,
char  jobvr,
char  sense,
lapack_int  n,
lapack_complex_double *  a,
lapack_int  lda,
lapack_complex_double *  w,
lapack_complex_double *  vl,
lapack_int  ldvl,
lapack_complex_double *  vr,
lapack_int  ldvr,
lapack_int *  ilo,
lapack_int *  ihi,
double *  scale,
double *  abnrm,
double *  rconde,
double *  rcondv,
lapack_complex_double *  work,
lapack_int  lwork,
double *  rwork 
)

Definition at line 36 of file lapacke_zgeevx_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, w, vl,
51  &ldvl, vr, &ldvr, ilo, ihi, scale, abnrm, rconde, rcondv,
52  work, &lwork, rwork, &info );
53  if( info < 0 ) {
54  info = info - 1;
55  }
56  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
57  lapack_int lda_t = MAX(1,n);
58  lapack_int ldvl_t = MAX(1,n);
59  lapack_int ldvr_t = MAX(1,n);
60  lapack_complex_double* a_t = NULL;
61  lapack_complex_double* vl_t = NULL;
62  lapack_complex_double* vr_t = NULL;
63  /* Check leading dimension(s) */
64  if( lda < n ) {
65  info = -8;
66  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
67  return info;
68  }
69  if( ldvl < n ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
72  return info;
73  }
74  if( ldvr < n ) {
75  info = -13;
76  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
77  return info;
78  }
79  /* Query optimal working array(s) size if requested */
80  if( lwork == -1 ) {
81  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, w,
82  vl, &ldvl_t, vr, &ldvr_t, ilo, ihi, scale, abnrm,
83  rconde, rcondv, work, &lwork, rwork, &info );
84  return (info < 0) ? (info - 1) : info;
85  }
86  /* Allocate memory for temporary array(s) */
87  a_t = (lapack_complex_double*)
88  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
89  if( a_t == NULL ) {
90  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91  goto exit_level_0;
92  }
93  if( LAPACKE_lsame( jobvl, 'v' ) ) {
94  vl_t = (lapack_complex_double*)
95  LAPACKE_malloc( sizeof(lapack_complex_double) *
96  ldvl_t * MAX(1,n) );
97  if( vl_t == NULL ) {
98  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
99  goto exit_level_1;
100  }
101  }
102  if( LAPACKE_lsame( jobvr, 'v' ) ) {
103  vr_t = (lapack_complex_double*)
104  LAPACKE_malloc( sizeof(lapack_complex_double) *
105  ldvr_t * MAX(1,n) );
106  if( vr_t == NULL ) {
107  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
108  goto exit_level_2;
109  }
110  }
111  /* Transpose input matrices */
112  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
113  /* Call LAPACK function and adjust info */
114  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, w,
115  vl_t, &ldvl_t, vr_t, &ldvr_t, ilo, ihi, scale, abnrm,
116  rconde, rcondv, work, &lwork, rwork, &info );
117  if( info < 0 ) {
118  info = info - 1;
119  }
120  /* Transpose output matrices */
121  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
122  if( LAPACKE_lsame( jobvl, 'v' ) ) {
123  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
124  }
125  if( LAPACKE_lsame( jobvr, 'v' ) ) {
126  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
127  }
128  /* Release memory and exit */
129  if( LAPACKE_lsame( jobvr, 'v' ) ) {
130  LAPACKE_free( vr_t );
131  }
132 exit_level_2:
133  if( LAPACKE_lsame( jobvl, 'v' ) ) {
134  LAPACKE_free( vl_t );
135  }
136 exit_level_1:
137  LAPACKE_free( a_t );
138 exit_level_0:
139  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
140  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
141  }
142  } else {
143  info = -1;
144  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
145  }
146  return info;
147 }
LAPACK_zgeevx
void LAPACK_zgeevx(char *balanc, char *jobvl, char *jobvr, char *sense, lapack_int *n, lapack_complex_double *a, lapack_int *lda, lapack_complex_double *w, lapack_complex_double *vl, lapack_int *ldvl, lapack_complex_double *vr, lapack_int *ldvr, lapack_int *ilo, lapack_int *ihi, double *scale, double *abnrm, double *rconde, double *rcondv, lapack_complex_double *work, lapack_int *lwork, double *rwork, lapack_int *info)
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_double
#define lapack_complex_double
Definition: lapacke.h:90
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
LAPACKE_zge_trans
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
Definition: lapacke_zge_trans.c:40

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