LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztgevc_work()

lapack_int LAPACKE_ztgevc_work ( int  matrix_layout,
char  side,
char  howmny,
const lapack_logical select,
lapack_int  n,
const lapack_complex_double s,
lapack_int  lds,
const lapack_complex_double p,
lapack_int  ldp,
lapack_complex_double vl,
lapack_int  ldvl,
lapack_complex_double vr,
lapack_int  ldvr,
lapack_int  mm,
lapack_int m,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_ztgevc_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_ztgevc( &side, &howmny, select, &n, s, &lds, p, &ldp, vl, &ldvl,
49  vr, &ldvr, &mm, m, work, rwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldp_t = MAX(1,n);
55  lapack_int lds_t = MAX(1,n);
56  lapack_int ldvl_t = MAX(1,n);
57  lapack_int ldvr_t = MAX(1,n);
58  lapack_complex_double* s_t = NULL;
59  lapack_complex_double* p_t = NULL;
60  lapack_complex_double* vl_t = NULL;
61  lapack_complex_double* vr_t = NULL;
62  /* Check leading dimension(s) */
63  if( ldp < n ) {
64  info = -9;
65  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
66  return info;
67  }
68  if( lds < n ) {
69  info = -7;
70  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
71  return info;
72  }
73  if( ldvl < mm ) {
74  info = -11;
75  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
76  return info;
77  }
78  if( ldvr < mm ) {
79  info = -13;
80  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
81  return info;
82  }
83  /* Allocate memory for temporary array(s) */
84  s_t = (lapack_complex_double*)
85  LAPACKE_malloc( sizeof(lapack_complex_double) * lds_t * MAX(1,n) );
86  if( s_t == NULL ) {
88  goto exit_level_0;
89  }
90  p_t = (lapack_complex_double*)
91  LAPACKE_malloc( sizeof(lapack_complex_double) * ldp_t * MAX(1,n) );
92  if( p_t == NULL ) {
94  goto exit_level_1;
95  }
96  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
97  vl_t = (lapack_complex_double*)
99  ldvl_t * MAX(1,mm) );
100  if( vl_t == NULL ) {
102  goto exit_level_2;
103  }
104  }
105  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
106  vr_t = (lapack_complex_double*)
108  ldvr_t * MAX(1,mm) );
109  if( vr_t == NULL ) {
111  goto exit_level_3;
112  }
113  }
114  /* Transpose input matrices */
115  LAPACKE_zge_trans( matrix_layout, n, n, s, lds, s_t, lds_t );
116  LAPACKE_zge_trans( matrix_layout, n, n, p, ldp, p_t, ldp_t );
117  if( ( LAPACKE_lsame( side, 'l' ) || LAPACKE_lsame( side, 'b' ) ) &&
118  LAPACKE_lsame( howmny, 'b' ) ) {
119  LAPACKE_zge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
120  }
121  if( ( LAPACKE_lsame( side, 'r' ) || LAPACKE_lsame( side, 'b' ) ) &&
122  LAPACKE_lsame( howmny, 'b' ) ) {
123  LAPACKE_zge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
124  }
125  /* Call LAPACK function and adjust info */
126  LAPACK_ztgevc( &side, &howmny, select, &n, s_t, &lds_t, p_t, &ldp_t,
127  vl_t, &ldvl_t, vr_t, &ldvr_t, &mm, m, work, rwork,
128  &info );
129  if( info < 0 ) {
130  info = info - 1;
131  }
132  /* Transpose output matrices */
133  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
134  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, mm, vl_t, ldvl_t, vl,
135  ldvl );
136  }
137  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
138  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, mm, vr_t, ldvr_t, vr,
139  ldvr );
140  }
141  /* Release memory and exit */
142  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'r' ) ) {
143  LAPACKE_free( vr_t );
144  }
145 exit_level_3:
146  if( LAPACKE_lsame( side, 'b' ) || LAPACKE_lsame( side, 'l' ) ) {
147  LAPACKE_free( vl_t );
148  }
149 exit_level_2:
150  LAPACKE_free( p_t );
151 exit_level_1:
152  LAPACKE_free( s_t );
153 exit_level_0:
154  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
155  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
156  }
157  } else {
158  info = -1;
159  LAPACKE_xerbla( "LAPACKE_ztgevc_work", info );
160  }
161  return info;
162 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_ztgevc(char *side, char *howmny, const lapack_logical *select, lapack_int *n, const lapack_complex_double *s, lapack_int *lds, const lapack_complex_double *p, lapack_int *ldp, lapack_complex_double *vl, lapack_int *ldvl, lapack_complex_double *vr, lapack_int *ldvr, lapack_int *mm, lapack_int *m, lapack_complex_double *work, double *rwork, lapack_int *info)
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
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