LAPACK  3.9.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztgsna_work()

lapack_int LAPACKE_ztgsna_work ( int  matrix_layout,
char  job,
char  howmny,
const lapack_logical *  select,
lapack_int  n,
const lapack_complex_double *  a,
lapack_int  lda,
const lapack_complex_double *  b,
lapack_int  ldb,
const lapack_complex_double *  vl,
lapack_int  ldvl,
const lapack_complex_double *  vr,
lapack_int  ldvr,
double *  s,
double *  dif,
lapack_int  mm,
lapack_int *  m,
lapack_complex_double *  work,
lapack_int  lwork,
lapack_int *  iwork 
)

Definition at line 35 of file lapacke_ztgsna_work.c.

46 {
47  lapack_int info = 0;
48  if( matrix_layout == LAPACK_COL_MAJOR ) {
49  /* Call LAPACK function and adjust info */
50  LAPACK_ztgsna( &job, &howmny, select, &n, a, &lda, b, &ldb, vl, &ldvl,
51  vr, &ldvr, s, dif, &mm, m, work, &lwork, iwork, &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 ldb_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* b_t = NULL;
62  lapack_complex_double* vl_t = NULL;
63  lapack_complex_double* vr_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -7;
67  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
68  return info;
69  }
70  if( ldb < n ) {
71  info = -9;
72  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
73  return info;
74  }
75  if( ldvl < mm ) {
76  info = -11;
77  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
78  return info;
79  }
80  if( ldvr < mm ) {
81  info = -13;
82  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
83  return info;
84  }
85  /* Query optimal working array(s) size if requested */
86  if( lwork == -1 ) {
87  LAPACK_ztgsna( &job, &howmny, select, &n, a, &lda_t, b, &ldb_t, vl,
88  &ldvl_t, vr, &ldvr_t, s, dif, &mm, m, work, &lwork,
89  iwork, &info );
90  return (info < 0) ? (info - 1) : info;
91  }
92  /* Allocate memory for temporary array(s) */
93  a_t = (lapack_complex_double*)
94  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
95  if( a_t == NULL ) {
96  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97  goto exit_level_0;
98  }
99  b_t = (lapack_complex_double*)
100  LAPACKE_malloc( sizeof(lapack_complex_double) * ldb_t * MAX(1,n) );
101  if( b_t == NULL ) {
102  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103  goto exit_level_1;
104  }
105  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
106  vl_t = (lapack_complex_double*)
107  LAPACKE_malloc( sizeof(lapack_complex_double) *
108  ldvl_t * MAX(1,mm) );
109  if( vl_t == NULL ) {
110  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
111  goto exit_level_2;
112  }
113  }
114  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
115  vr_t = (lapack_complex_double*)
116  LAPACKE_malloc( sizeof(lapack_complex_double) *
117  ldvr_t * MAX(1,mm) );
118  if( vr_t == NULL ) {
119  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120  goto exit_level_3;
121  }
122  }
123  /* Transpose input matrices */
124  LAPACKE_zge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
125  LAPACKE_zge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
126  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
127  LAPACKE_zge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
128  }
129  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
130  LAPACKE_zge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
131  }
132  /* Call LAPACK function and adjust info */
133  LAPACK_ztgsna( &job, &howmny, select, &n, a_t, &lda_t, b_t, &ldb_t,
134  vl_t, &ldvl_t, vr_t, &ldvr_t, s, dif, &mm, m, work,
135  &lwork, iwork, &info );
136  if( info < 0 ) {
137  info = info - 1;
138  }
139  /* Release memory and exit */
140  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
141  LAPACKE_free( vr_t );
142  }
143 exit_level_3:
144  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
145  LAPACKE_free( vl_t );
146  }
147 exit_level_2:
148  LAPACKE_free( b_t );
149 exit_level_1:
150  LAPACKE_free( a_t );
151 exit_level_0:
152  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
153  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
154  }
155  } else {
156  info = -1;
157  LAPACKE_xerbla( "LAPACKE_ztgsna_work", info );
158  }
159  return info;
160 }
lapack_int
#define lapack_int
Definition: lapack.h:83
LAPACK_ztgsna
void LAPACK_ztgsna(char const *job, char const *howmny, lapack_logical const *select, lapack_int const *n, lapack_complex_double const *A, lapack_int const *lda, lapack_complex_double const *B, lapack_int const *ldb, lapack_complex_double const *VL, lapack_int const *ldvl, lapack_complex_double const *VR, lapack_int const *ldvr, double *S, double *DIF, lapack_int const *mm, lapack_int *m, lapack_complex_double *work, lapack_int const *lwork, lapack_int *iwork, lapack_int *info)
lapack_complex_double
#define lapack_complex_double
Definition: lapack.h:63
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_lsame
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
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:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
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