LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgejsv_work()

lapack_int LAPACKE_sgejsv_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
char  jobr,
char  jobt,
char  jobp,
lapack_int  m,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  sva,
float *  u,
lapack_int  ldu,
float *  v,
lapack_int  ldv,
float *  work,
lapack_int  lwork,
lapack_int iwork 
)

Definition at line 36 of file lapacke_sgejsv_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_sgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a,
48  &lda, sva, u, &ldu, v, &ldv, work, &lwork, iwork,
49  &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int nu = LAPACKE_lsame( jobu, 'n' ) ? 1 : m;
55  lapack_int nv = LAPACKE_lsame( jobv, 'n' ) ? 1 : n;
56  lapack_int ncols_u = LAPACKE_lsame( jobu, 'n' ) ? 1 :
57  LAPACKE_lsame( jobu, 'f' ) ? m : n;
58  lapack_int lda_t = MAX(1,m);
59  lapack_int ldu_t = MAX(1,nu);
60  lapack_int ldv_t = MAX(1,nv);
61  float* a_t = NULL;
62  float* u_t = NULL;
63  float* v_t = NULL;
64  /* Check leading dimension(s) */
65  if( lda < n ) {
66  info = -11;
67  LAPACKE_xerbla( "LAPACKE_sgejsv_work", info );
68  return info;
69  }
70  if( ldu < ncols_u ) {
71  info = -14;
72  LAPACKE_xerbla( "LAPACKE_sgejsv_work", info );
73  return info;
74  }
75  if( ldv < n ) {
76  info = -16;
77  LAPACKE_xerbla( "LAPACKE_sgejsv_work", info );
78  return info;
79  }
80  /* Allocate memory for temporary array(s) */
81  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
82  if( a_t == NULL ) {
84  goto exit_level_0;
85  }
86  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
87  LAPACKE_lsame( jobu, 'w' ) ) {
88  u_t = (float*)LAPACKE_malloc( sizeof(float) * ldu_t * MAX(1,ncols_u) );
89  if( u_t == NULL ) {
91  goto exit_level_1;
92  }
93  }
94  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
95  LAPACKE_lsame( jobv, 'w' ) ) {
96  v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,n) );
97  if( v_t == NULL ) {
99  goto exit_level_2;
100  }
101  }
102  /* Transpose input matrices */
103  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
104  /* Call LAPACK function and adjust info */
105  LAPACK_sgejsv( &joba, &jobu, &jobv, &jobr, &jobt, &jobp, &m, &n, a_t,
106  &lda_t, sva, u_t, &ldu_t, v_t, &ldv_t, work, &lwork,
107  iwork, &info );
108  if( info < 0 ) {
109  info = info - 1;
110  }
111  /* Transpose output matrices */
112  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
113  LAPACKE_lsame( jobu, 'w' ) ) {
114  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nu, ncols_u, u_t, ldu_t, u, ldu );
115  }
116  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
117  LAPACKE_lsame( jobv, 'w' ) ) {
118  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nv, n, v_t, ldv_t, v, ldv );
119  }
120  /* Release memory and exit */
121  if( LAPACKE_lsame( jobv, 'j' ) || LAPACKE_lsame( jobv, 'v' ) ||
122  LAPACKE_lsame( jobv, 'w' ) ) {
123  LAPACKE_free( v_t );
124  }
125 exit_level_2:
126  if( LAPACKE_lsame( jobu, 'f' ) || LAPACKE_lsame( jobu, 'u' ) ||
127  LAPACKE_lsame( jobu, 'w' ) ) {
128  LAPACKE_free( u_t );
129  }
130 exit_level_1:
131  LAPACKE_free( a_t );
132 exit_level_0:
133  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
134  LAPACKE_xerbla( "LAPACKE_sgejsv_work", info );
135  }
136  } else {
137  info = -1;
138  LAPACKE_xerbla( "LAPACKE_sgejsv_work", info );
139  }
140  return info;
141 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sgejsv(char *joba, char *jobu, char *jobv, char *jobr, char *jobt, char *jobp, lapack_int *m, lapack_int *n, float *a, lapack_int *lda, float *sva, float *u, lapack_int *ldu, float *v, lapack_int *ldv, float *work, lapack_int *lwork, lapack_int *iwork, 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: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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