LAPACK  3.9.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_chgeqz_work()

lapack_int LAPACKE_chgeqz_work ( int  matrix_layout,
char  job,
char  compq,
char  compz,
lapack_int  n,
lapack_int  ilo,
lapack_int  ihi,
lapack_complex_float *  h,
lapack_int  ldh,
lapack_complex_float *  t,
lapack_int  ldt,
lapack_complex_float *  alpha,
lapack_complex_float *  beta,
lapack_complex_float *  q,
lapack_int  ldq,
lapack_complex_float *  z,
lapack_int  ldz,
lapack_complex_float *  work,
lapack_int  lwork,
float *  rwork 
)

Definition at line 35 of file lapacke_chgeqz_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh, t, &ldt,
50  alpha, beta, q, &ldq, z, &ldz, work, &lwork, rwork,
51  &info );
52  if( info < 0 ) {
53  info = info - 1;
54  }
55  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
56  lapack_int ldh_t = MAX(1,n);
57  lapack_int ldq_t = MAX(1,n);
58  lapack_int ldt_t = MAX(1,n);
59  lapack_int ldz_t = MAX(1,n);
60  lapack_complex_float* h_t = NULL;
61  lapack_complex_float* t_t = NULL;
62  lapack_complex_float* q_t = NULL;
63  lapack_complex_float* z_t = NULL;
64  /* Check leading dimension(s) */
65  if( ldh < n ) {
66  info = -9;
67  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
68  return info;
69  }
70  if( ldq < n ) {
71  info = -15;
72  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
73  return info;
74  }
75  if( ldt < n ) {
76  info = -11;
77  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
78  return info;
79  }
80  if( ldz < n ) {
81  info = -17;
82  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
83  return info;
84  }
85  /* Query optimal working array(s) size if requested */
86  if( lwork == -1 ) {
87  LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h, &ldh_t, t,
88  &ldt_t, alpha, beta, q, &ldq_t, z, &ldz_t, work,
89  &lwork, rwork, &info );
90  return (info < 0) ? (info - 1) : info;
91  }
92  /* Allocate memory for temporary array(s) */
93  h_t = (lapack_complex_float*)
94  LAPACKE_malloc( sizeof(lapack_complex_float) * ldh_t * MAX(1,n) );
95  if( h_t == NULL ) {
96  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
97  goto exit_level_0;
98  }
99  t_t = (lapack_complex_float*)
100  LAPACKE_malloc( sizeof(lapack_complex_float) * ldt_t * MAX(1,n) );
101  if( t_t == NULL ) {
102  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
103  goto exit_level_1;
104  }
105  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
106  q_t = (lapack_complex_float*)
107  LAPACKE_malloc( sizeof(lapack_complex_float) *
108  ldq_t * MAX(1,n) );
109  if( q_t == NULL ) {
110  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
111  goto exit_level_2;
112  }
113  }
114  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
115  z_t = (lapack_complex_float*)
116  LAPACKE_malloc( sizeof(lapack_complex_float) *
117  ldz_t * MAX(1,n) );
118  if( z_t == NULL ) {
119  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
120  goto exit_level_3;
121  }
122  }
123  /* Transpose input matrices */
124  LAPACKE_cge_trans( matrix_layout, n, n, h, ldh, h_t, ldh_t );
125  LAPACKE_cge_trans( matrix_layout, n, n, t, ldt, t_t, ldt_t );
126  if( LAPACKE_lsame( compq, 'v' ) ) {
127  LAPACKE_cge_trans( matrix_layout, n, n, q, ldq, q_t, ldq_t );
128  }
129  if( LAPACKE_lsame( compz, 'v' ) ) {
130  LAPACKE_cge_trans( matrix_layout, n, n, z, ldz, z_t, ldz_t );
131  }
132  /* Call LAPACK function and adjust info */
133  LAPACK_chgeqz( &job, &compq, &compz, &n, &ilo, &ihi, h_t, &ldh_t, t_t,
134  &ldt_t, alpha, beta, q_t, &ldq_t, z_t, &ldz_t, work,
135  &lwork, rwork, &info );
136  if( info < 0 ) {
137  info = info - 1;
138  }
139  /* Transpose output matrices */
140  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, h_t, ldh_t, h, ldh );
141  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, t_t, ldt_t, t, ldt );
142  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
143  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, q_t, ldq_t, q, ldq );
144  }
145  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
146  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, n, z_t, ldz_t, z, ldz );
147  }
148  /* Release memory and exit */
149  if( LAPACKE_lsame( compz, 'i' ) || LAPACKE_lsame( compz, 'v' ) ) {
150  LAPACKE_free( z_t );
151  }
152 exit_level_3:
153  if( LAPACKE_lsame( compq, 'i' ) || LAPACKE_lsame( compq, 'v' ) ) {
154  LAPACKE_free( q_t );
155  }
156 exit_level_2:
157  LAPACKE_free( t_t );
158 exit_level_1:
159  LAPACKE_free( h_t );
160 exit_level_0:
161  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
162  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
163  }
164  } else {
165  info = -1;
166  LAPACKE_xerbla( "LAPACKE_chgeqz_work", info );
167  }
168  return info;
169 }
lapack_int
#define lapack_int
Definition: lapack.h:83
LAPACK_chgeqz
void LAPACK_chgeqz(char const *job, char const *compq, char const *compz, lapack_int const *n, lapack_int const *ilo, lapack_int const *ihi, lapack_complex_float *H, lapack_int const *ldh, lapack_complex_float *T, lapack_int const *ldt, lapack_complex_float *alpha, lapack_complex_float *beta, lapack_complex_float *Q, lapack_int const *ldq, lapack_complex_float *Z, lapack_int const *ldz, lapack_complex_float *work, lapack_int const *lwork, float *rwork, lapack_int *info)
lapack_complex_float
#define lapack_complex_float
Definition: lapack.h:45
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
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_cge_trans
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)
Definition: lapacke_cge_trans.c:39
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