LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgeevx_work()

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 35 of file lapacke_zgeevx_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda, w, vl,
50  &ldvl, vr, &ldvr, ilo, ihi, scale, abnrm, rconde, rcondv,
51  work, &lwork, rwork, &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int lda_t = MAX(1,n);
57  lapack_int ldvl_t = MAX(1,n);
58  lapack_int ldvr_t = MAX(1,n);
59  lapack_complex_double* a_t = NULL;
60  lapack_complex_double* vl_t = NULL;
61  lapack_complex_double* vr_t = NULL;
62  /* Check leading dimension(s) */
63  if( lda < n ) {
64  info = -8;
65  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
66  return info;
67  }
68  if( ldvl < n ) {
69  info = -11;
70  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
71  return info;
72  }
73  if( ldvr < n ) {
74  info = -13;
75  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
76  return info;
77  }
78  /* Query optimal working array(s) size if requested */
79  if( lwork == -1 ) {
80  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a, &lda_t, w,
81  vl, &ldvl_t, vr, &ldvr_t, ilo, ihi, scale, abnrm,
82  rconde, rcondv, work, &lwork, rwork, &info );
83  return (info < 0) ? (info - 1) : info;
84  }
85  /* Allocate memory for temporary array(s) */
86  a_t = (lapack_complex_double*)
87  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
88  if( a_t == NULL ) {
90  goto exit_level_0;
91  }
92  if( LAPACKE_lsame( jobvl, 'v' ) ) {
93  vl_t = (lapack_complex_double*)
95  ldvl_t * MAX(1,n) );
96  if( vl_t == NULL ) {
98  goto exit_level_1;
99  }
100  }
101  if( LAPACKE_lsame( jobvr, 'v' ) ) {
102  vr_t = (lapack_complex_double*)
104  ldvr_t * MAX(1,n) );
105  if( vr_t == NULL ) {
107  goto exit_level_2;
108  }
109  }
110  /* Transpose input matrices */
111  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
112  /* Call LAPACK function and adjust info */
113  LAPACK_zgeevx( &balanc, &jobvl, &jobvr, &sense, &n, a_t, &lda_t, w,
114  vl_t, &ldvl_t, vr_t, &ldvr_t, ilo, ihi, scale, abnrm,
115  rconde, rcondv, work, &lwork, rwork, &info );
116  if( info < 0 ) {
117  info = info - 1;
118  }
119  /* Transpose output matrices */
120  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
121  if( LAPACKE_lsame( jobvl, 'v' ) ) {
122  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
123  }
124  if( LAPACKE_lsame( jobvr, 'v' ) ) {
125  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
126  }
127  /* Release memory and exit */
128  if( LAPACKE_lsame( jobvr, 'v' ) ) {
129  LAPACKE_free( vr_t );
130  }
131 exit_level_2:
132  if( LAPACKE_lsame( jobvl, 'v' ) ) {
133  LAPACKE_free( vl_t );
134  }
135 exit_level_1:
136  LAPACKE_free( a_t );
137 exit_level_0:
138  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
139  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
140  }
141  } else {
142  info = -1;
143  LAPACKE_xerbla( "LAPACKE_zgeevx_work", info );
144  }
145  return info;
146 }
#define LAPACK_zgeevx(...)
Definition: lapack.h:1971
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_double
Definition: lapack.h:63
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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