LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgeev_work()

lapack_int LAPACKE_cgeev_work ( int  matrix_layout,
char  jobvl,
char  jobvr,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float w,
lapack_complex_float vl,
lapack_int  ldvl,
lapack_complex_float vr,
lapack_int  ldvr,
lapack_complex_float work,
lapack_int  lwork,
float *  rwork 
)

Definition at line 35 of file lapacke_cgeev_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda, w, vl, &ldvl, vr, &ldvr,
47  work, &lwork, rwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_int ldvl_t = MAX(1,n);
54  lapack_int ldvr_t = MAX(1,n);
55  lapack_complex_float* a_t = NULL;
56  lapack_complex_float* vl_t = NULL;
57  lapack_complex_float* vr_t = NULL;
58  /* Check leading dimension(s) */
59  if( lda < n ) {
60  info = -6;
61  LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
62  return info;
63  }
64  if( ldvl < n ) {
65  info = -9;
66  LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
67  return info;
68  }
69  if( ldvr < n ) {
70  info = -11;
71  LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
72  return info;
73  }
74  /* Query optimal working array(s) size if requested */
75  if( lwork == -1 ) {
76  LAPACK_cgeev( &jobvl, &jobvr, &n, a, &lda_t, w, vl, &ldvl_t, vr,
77  &ldvr_t, work, &lwork, rwork, &info );
78  return (info < 0) ? (info - 1) : info;
79  }
80  /* Allocate memory for temporary array(s) */
81  a_t = (lapack_complex_float*)
82  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
83  if( a_t == NULL ) {
85  goto exit_level_0;
86  }
87  if( LAPACKE_lsame( jobvl, 'v' ) ) {
88  vl_t = (lapack_complex_float*)
90  ldvl_t * MAX(1,n) );
91  if( vl_t == NULL ) {
93  goto exit_level_1;
94  }
95  }
96  if( LAPACKE_lsame( jobvr, 'v' ) ) {
97  vr_t = (lapack_complex_float*)
99  ldvr_t * MAX(1,n) );
100  if( vr_t == NULL ) {
102  goto exit_level_2;
103  }
104  }
105  /* Transpose input matrices */
106  LAPACKE_cge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
107  /* Call LAPACK function and adjust info */
108  LAPACK_cgeev( &jobvl, &jobvr, &n, a_t, &lda_t, w, vl_t, &ldvl_t, vr_t,
109  &ldvr_t, work, &lwork, rwork, &info );
110  if( info < 0 ) {
111  info = info - 1;
112  }
113  /* Transpose output matrices */
114  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
115  if( LAPACKE_lsame( jobvl, 'v' ) ) {
116  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vl_t, ldvl_t, vl, ldvl );
117  }
118  if( LAPACKE_lsame( jobvr, 'v' ) ) {
119  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, vr_t, ldvr_t, vr, ldvr );
120  }
121  /* Release memory and exit */
122  if( LAPACKE_lsame( jobvr, 'v' ) ) {
123  LAPACKE_free( vr_t );
124  }
125 exit_level_2:
126  if( LAPACKE_lsame( jobvl, 'v' ) ) {
127  LAPACKE_free( vl_t );
128  }
129 exit_level_1:
130  LAPACKE_free( a_t );
131 exit_level_0:
132  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
133  LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
134  }
135  } else {
136  info = -1;
137  LAPACKE_xerbla( "LAPACKE_cgeev_work", info );
138  }
139  return info;
140 }
#define LAPACK_cgeev(...)
Definition: lapack.h:1806
#define lapack_int
Definition: lapack.h:83
#define lapack_complex_float
Definition: lapack.h:45
#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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
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