LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgges_work()

lapack_int LAPACKE_sgges_work ( int  matrix_layout,
char  jobvsl,
char  jobvsr,
char  sort,
LAPACK_S_SELECT3  selctg,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
lapack_int sdim,
float *  alphar,
float *  alphai,
float *  beta,
float *  vsl,
lapack_int  ldvsl,
float *  vsr,
lapack_int  ldvsr,
float *  work,
lapack_int  lwork,
lapack_logical bwork 
)

Definition at line 35 of file lapacke_sgges_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_sgges( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda, b, &ldb,
48  sdim, alphar, alphai, beta, vsl, &ldvsl, vsr, &ldvsr,
49  work, &lwork, bwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int lda_t = MAX(1,n);
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldvsl_t = MAX(1,n);
57  lapack_int ldvsr_t = MAX(1,n);
58  float* a_t = NULL;
59  float* b_t = NULL;
60  float* vsl_t = NULL;
61  float* vsr_t = NULL;
62  /* Check leading dimension(s) */
63  if( lda < n ) {
64  info = -8;
65  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
66  return info;
67  }
68  if( ldb < n ) {
69  info = -10;
70  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
71  return info;
72  }
73  if( ldvsl < n ) {
74  info = -16;
75  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
76  return info;
77  }
78  if( ldvsr < n ) {
79  info = -18;
80  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
81  return info;
82  }
83  /* Query optimal working array(s) size if requested */
84  if( lwork == -1 ) {
85  LAPACK_sgges( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda_t, b,
86  &ldb_t, sdim, alphar, alphai, beta, vsl, &ldvsl_t,
87  vsr, &ldvsr_t, work, &lwork, bwork, &info );
88  return (info < 0) ? (info - 1) : info;
89  }
90  /* Allocate memory for temporary array(s) */
91  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
92  if( a_t == NULL ) {
94  goto exit_level_0;
95  }
96  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
97  if( b_t == NULL ) {
99  goto exit_level_1;
100  }
101  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
102  vsl_t = (float*)
103  LAPACKE_malloc( sizeof(float) * ldvsl_t * MAX(1,n) );
104  if( vsl_t == NULL ) {
106  goto exit_level_2;
107  }
108  }
109  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
110  vsr_t = (float*)
111  LAPACKE_malloc( sizeof(float) * ldvsr_t * MAX(1,n) );
112  if( vsr_t == NULL ) {
114  goto exit_level_3;
115  }
116  }
117  /* Transpose input matrices */
118  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
119  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
120  /* Call LAPACK function and adjust info */
121  LAPACK_sgges( &jobvsl, &jobvsr, &sort, selctg, &n, a_t, &lda_t, b_t,
122  &ldb_t, sdim, alphar, alphai, beta, vsl_t, &ldvsl_t,
123  vsr_t, &ldvsr_t, work, &lwork, bwork, &info );
124  if( info < 0 ) {
125  info = info - 1;
126  }
127  /* Transpose output matrices */
128  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
129  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
130  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
131  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
132  ldvsl );
133  }
134  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
135  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
136  ldvsr );
137  }
138  /* Release memory and exit */
139  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
140  LAPACKE_free( vsr_t );
141  }
142 exit_level_3:
143  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
144  LAPACKE_free( vsl_t );
145  }
146 exit_level_2:
147  LAPACKE_free( b_t );
148 exit_level_1:
149  LAPACKE_free( a_t );
150 exit_level_0:
151  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
152  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
153  }
154  } else {
155  info = -1;
156  LAPACKE_xerbla( "LAPACKE_sgges_work", info );
157  }
158  return info;
159 }
#define LAPACK_sgges(...)
Definition: lapack.h:4418
#define lapack_int
Definition: lapack.h:83
#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)
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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