LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ctgsen_work()

lapack_int LAPACKE_ctgsen_work ( int  matrix_layout,
lapack_int  ijob,
lapack_logical  wantq,
lapack_logical  wantz,
const lapack_logical select,
lapack_int  n,
lapack_complex_float a,
lapack_int  lda,
lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float alpha,
lapack_complex_float beta,
lapack_complex_float q,
lapack_int  ldq,
lapack_complex_float z,
lapack_int  ldz,
lapack_int m,
float *  pl,
float *  pr,
float *  dif,
lapack_complex_float work,
lapack_int  lwork,
lapack_int iwork,
lapack_int  liwork 
)

Definition at line 36 of file lapacke_ctgsen_work.c.

48 {
49  lapack_int info = 0;
50  if( matrix_layout == LAPACK_COL_MAJOR ) {
51  /* Call LAPACK function and adjust info */
52  LAPACK_ctgsen( &ijob, &wantq, &wantz, select, &n, a, &lda, b, &ldb,
53  alpha, beta, q, &ldq, z, &ldz, m, pl, pr, dif, work,
54  &lwork, iwork, &liwork, &info );
55  if( info < 0 ) {
56  info = info - 1;
57  }
58  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
59  lapack_int lda_t = MAX(1,n);
60  lapack_int ldb_t = MAX(1,n);
61  lapack_int ldq_t = MAX(1,n);
62  lapack_int ldz_t = MAX(1,n);
63  lapack_complex_float* a_t = NULL;
64  lapack_complex_float* b_t = NULL;
65  lapack_complex_float* q_t = NULL;
66  lapack_complex_float* z_t = NULL;
67  /* Check leading dimension(s) */
68  if( lda < n ) {
69  info = -8;
70  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
71  return info;
72  }
73  if( ldb < n ) {
74  info = -10;
75  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
76  return info;
77  }
78  if( ldq < n ) {
79  info = -14;
80  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
81  return info;
82  }
83  if( ldz < n ) {
84  info = -16;
85  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
86  return info;
87  }
88  /* Query optimal working array(s) size if requested */
89  if( liwork == -1 || lwork == -1 ) {
90  LAPACK_ctgsen( &ijob, &wantq, &wantz, select, &n, a, &lda_t, b,
91  &ldb_t, alpha, beta, q, &ldq_t, z, &ldz_t, m, pl, pr,
92  dif, work, &lwork, iwork, &liwork, &info );
93  return (info < 0) ? (info - 1) : info;
94  }
95  /* Allocate memory for temporary array(s) */
96  a_t = (lapack_complex_float*)
97  LAPACKE_malloc( sizeof(lapack_complex_float) * lda_t * MAX(1,n) );
98  if( a_t == NULL ) {
100  goto exit_level_0;
101  }
102  b_t = (lapack_complex_float*)
103  LAPACKE_malloc( sizeof(lapack_complex_float) * ldb_t * MAX(1,n) );
104  if( b_t == NULL ) {
106  goto exit_level_1;
107  }
108  if( wantq ) {
109  q_t = (lapack_complex_float*)
111  ldq_t * MAX(1,n) );
112  if( q_t == NULL ) {
114  goto exit_level_2;
115  }
116  }
117  if( wantz ) {
118  z_t = (lapack_complex_float*)
120  ldz_t * MAX(1,n) );
121  if( z_t == NULL ) {
123  goto exit_level_3;
124  }
125  }
126  /* Transpose input matrices */
127  LAPACKE_cge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
128  LAPACKE_cge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
129  if( wantq ) {
130  LAPACKE_cge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
131  }
132  if( wantz ) {
133  LAPACKE_cge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
134  }
135  /* Call LAPACK function and adjust info */
136  LAPACK_ctgsen( &ijob, &wantq, &wantz, select, &n, a_t, &lda_t, b_t,
137  &ldb_t, alpha, beta, q_t, &ldq_t, z_t, &ldz_t, m, pl, pr,
138  dif, work, &lwork, iwork, &liwork, &info );
139  if( info < 0 ) {
140  info = info - 1;
141  }
142  /* Transpose output matrices */
143  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
144  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
145  if( wantq ) {
146  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
147  }
148  if( wantz ) {
149  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
150  }
151  /* Release memory and exit */
152  if( wantz ) {
153  LAPACKE_free( z_t );
154  }
155 exit_level_3:
156  if( wantq ) {
157  LAPACKE_free( q_t );
158  }
159 exit_level_2:
160  LAPACKE_free( b_t );
161 exit_level_1:
162  LAPACKE_free( a_t );
163 exit_level_0:
164  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
165  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
166  }
167  } else {
168  info = -1;
169  LAPACKE_xerbla( "LAPACKE_ctgsen_work", info );
170  }
171  return info;
172 }
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)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
void LAPACK_ctgsen(lapack_int *ijob, lapack_logical *wantq, lapack_logical *wantz, const lapack_logical *select, lapack_int *n, lapack_complex_float *a, lapack_int *lda, lapack_complex_float *b, lapack_int *ldb, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *q, lapack_int *ldq, lapack_complex_float *z, lapack_int *ldz, lapack_int *m, float *pl, float *pr, float *dif, lapack_complex_float *work, lapack_int *lwork, lapack_int *iwork, lapack_int *liwork, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#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
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