LAPACK  3.10.0
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 35 of file lapacke_stgsna_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_stgsna( &job, &howmny, select, &n, a, &lda, b, &ldb, vl, &ldvl,
48  vr, &ldvr, s, dif, &mm, m, work, &lwork, iwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int lda_t = MAX(1,n);
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldvl_t = MAX(1,n);
56  lapack_int ldvr_t = MAX(1,n);
57  float* a_t = NULL;
58  float* b_t = NULL;
59  float* vl_t = NULL;
60  float* vr_t = NULL;
61  /* Check leading dimension(s) */
62  if( lda < n ) {
63  info = -7;
64  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
65  return info;
66  }
67  if( ldb < n ) {
68  info = -9;
69  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
70  return info;
71  }
72  if( ldvl < mm ) {
73  info = -11;
74  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
75  return info;
76  }
77  if( ldvr < mm ) {
78  info = -13;
79  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
80  return info;
81  }
82  /* Query optimal working array(s) size if requested */
83  if( lwork == -1 ) {
84  LAPACK_stgsna( &job, &howmny, select, &n, a, &lda_t, b, &ldb_t, vl,
85  &ldvl_t, vr, &ldvr_t, s, dif, &mm, m, work, &lwork,
86  iwork, &info );
87  return (info < 0) ? (info - 1) : info;
88  }
89  /* Allocate memory for temporary array(s) */
90  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
91  if( a_t == NULL ) {
93  goto exit_level_0;
94  }
95  b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,n) );
96  if( b_t == NULL ) {
98  goto exit_level_1;
99  }
100  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
101  vl_t = (float*)LAPACKE_malloc( sizeof(float) * ldvl_t * MAX(1,mm) );
102  if( vl_t == NULL ) {
104  goto exit_level_2;
105  }
106  }
107  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
108  vr_t = (float*)LAPACKE_malloc( sizeof(float) * ldvr_t * MAX(1,mm) );
109  if( vr_t == NULL ) {
111  goto exit_level_3;
112  }
113  }
114  /* Transpose input matrices */
115  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
116  LAPACKE_sge_trans( matrix_layout, n, n, b, ldb, b_t, ldb_t );
117  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
118  LAPACKE_sge_trans( matrix_layout, n, mm, vl, ldvl, vl_t, ldvl_t );
119  }
120  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
121  LAPACKE_sge_trans( matrix_layout, n, mm, vr, ldvr, vr_t, ldvr_t );
122  }
123  /* Call LAPACK function and adjust info */
124  LAPACK_stgsna( &job, &howmny, select, &n, a_t, &lda_t, b_t, &ldb_t,
125  vl_t, &ldvl_t, vr_t, &ldvr_t, s, dif, &mm, m, work,
126  &lwork, iwork, &info );
127  if( info < 0 ) {
128  info = info - 1;
129  }
130  /* Release memory and exit */
131  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
132  LAPACKE_free( vr_t );
133  }
134 exit_level_3:
135  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'e' ) ) {
136  LAPACKE_free( vl_t );
137  }
138 exit_level_2:
139  LAPACKE_free( b_t );
140 exit_level_1:
141  LAPACKE_free( a_t );
142 exit_level_0:
143  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
144  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
145  }
146  } else {
147  info = -1;
148  LAPACKE_xerbla( "LAPACKE_stgsna_work", info );
149  }
150  return info;
151 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_stgsna(...)
Definition: lapack.h:20398
#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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