LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_stgsna_work()

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

Definition at line 36 of file lapacke_stgsna_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_stgsna( &job, &howmny, select, &n, a, &lda, b, &ldb, vl, &ldvl,
49  vr, &ldvr, s, dif, &mm, m, work, &lwork, iwork, &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 ldvl_t = MAX(1,n);
57  lapack_int ldvr_t = MAX(1,n);
58  float* a_t = NULL;
59  float* b_t = NULL;
60  float* vl_t = NULL;
61  float* vr_t = NULL;
62  /* Check leading dimension(s) */
63  if( lda < n ) {
64  info = -7;
65  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
66  return info;
67  }
68  if( ldb < n ) {
69  info = -9;
70  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
71  return info;
72  }
73  if( ldvl < mm ) {
74  info = -11;
75  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
76  return info;
77  }
78  if( ldvr < mm ) {
79  info = -13;
80  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
81  return info;
82  }
83  /* Query optimal working array(s) size if requested */
84  if( lwork == -1 ) {
85  LAPACK_stgsna( &job, &howmny, select, &n, a, &lda_t, b, &ldb_t, vl,
86  &ldvl_t, vr, &ldvr_t, s, dif, &mm, m, work, &lwork,
87  iwork, &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( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
102  vl_t = (float*)LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,mm) );
103  if( vl_t == NULL ) {
105  goto exit_level_2;
106  }
107  }
108  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
109  vr_t = (float*)LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,mm) );
110  if( vr_t == NULL ) {
112  goto exit_level_3;
113  }
114  }
115  /* Transpose input matrices */
116  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
117  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
118  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
119  LAPACKE_sge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
120  }
121  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
122  LAPACKE_sge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
123  }
124  /* Call LAPACK function and adjust info */
125  LAPACK_stgsna( &job, &howmny, select, &n, a_t, &lda_t, b_t, &ldb_t,
126  vl_t, &ldvl_t, vr_t, &ldvr_t, s, dif, &mm, m, work,
127  &lwork, iwork, &info );
128  if( info < 0 ) {
129  info = info - 1;
130  }
131  /* Release memory and exit */
132  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
133  LAPACKE_free( vr_t );
134  }
135 exit_level_3:
136  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
137  LAPACKE_free( vl_t );
138  }
139 exit_level_2:
140  LAPACKE_free( b_t );
141 exit_level_1:
142  LAPACKE_free( a_t );
143 exit_level_0:
144  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
145  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
146  }
147  } else {
148  info = -1;
149  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
150  }
151  return info;
152 }
#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)
void LAPACK_stgsna(char *job, char *howmny, const lapack_logical *select, lapack_int *n, const float *a, lapack_int *lda, const float *b, lapack_int *ldb, const float *vl, lapack_int *ldvl, const float *vr, lapack_int *ldvr, float *s, float *dif, lapack_int *mm, lapack_int *m, float *work, lapack_int *lwork, lapack_int *iwork, lapack_int *info)
#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
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