LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgges3_work()

lapack_int LAPACKE_sgges3_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 36 of file lapacke_sgges3_work.c.

45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda, b, &ldb,
50  sdim, alphar, alphai, beta, vsl, &ldvsl, vsr, &ldvsr,
51  work, &lwork, bwork, &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 ldvsl_t = MAX(1,n);
59  lapack_int ldvsr_t = MAX(1,n);
60  float* a_t = NULL;
61  float* b_t = NULL;
62  float* vsl_t = NULL;
63  float* vsr_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -8;
67  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
68  return info;
69  }
70  if( ldb < n ) {
71  info = -10;
72  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
73  return info;
74  }
75  if( ldvsl < n ) {
76  info = -16;
77  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
78  return info;
79  }
80  if( ldvsr < n ) {
81  info = -18;
82  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
83  return info;
84  }
85  /* Query optimal working array(s) size if requested */
86  if( lwork == -1 ) {
87  LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a, &lda_t, b,
88  &ldb_t, sdim, alphar, alphai, beta, vsl, &ldvsl_t,
89  vsr, &ldvsr_t, work, &lwork, bwork, &info );
90  return (info < 0) ? (info - 1) : info;
91  }
92  /* Allocate memory for temporary array(s) */
93  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
94  if( a_t == NULL ) {
96  goto exit_level_0;
97  }
98  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
99  if( b_t == NULL ) {
101  goto exit_level_1;
102  }
103  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
104  vsl_t = (float*)
105  LAPACKE_malloc( sizeof(float) * ldvsl_t * MAX(1,n) );
106  if( vsl_t == NULL ) {
108  goto exit_level_2;
109  }
110  }
111  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
112  vsr_t = (float*)
113  LAPACKE_malloc( sizeof(float) * ldvsr_t * MAX(1,n) );
114  if( vsr_t == NULL ) {
116  goto exit_level_3;
117  }
118  }
119  /* Transpose input matrices */
120  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
121  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
122  /* Call LAPACK function and adjust info */
123  LAPACK_sgges3( &jobvsl, &jobvsr, &sort, selctg, &n, a_t, &lda_t, b_t,
124  &ldb_t, sdim, alphar, alphai, beta, vsl_t, &ldvsl_t,
125  vsr_t, &ldvsr_t, work, &lwork, bwork, &info );
126  if( info < 0 ) {
127  info = info - 1;
128  }
129  /* Transpose output matrices */
130  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
131  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, b_t, ldb_t, b, ldb );
132  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
133  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsl_t, ldvsl_t, vsl,
134  ldvsl );
135  }
136  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
137  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, vsr_t, ldvsr_t, vsr,
138  ldvsr );
139  }
140  /* Release memory and exit */
141  if( LAPACKE_lsame( jobvsr, 'v' ) ) {
142  LAPACKE_free( vsr_t );
143  }
144 exit_level_3:
145  if( LAPACKE_lsame( jobvsl, 'v' ) ) {
146  LAPACKE_free( vsl_t );
147  }
148 exit_level_2:
149  LAPACKE_free( b_t );
150 exit_level_1:
151  LAPACKE_free( a_t );
152 exit_level_0:
153  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
154  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
155  }
156  } else {
157  info = -1;
158  LAPACKE_xerbla( "LAPACKE_sgges3_work", info );
159  }
160  return info;
161 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
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: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 LAPACK_sgges3(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, lapack_int *info)
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