LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgesvj_work()

lapack_int LAPACKE_sgesvj_work ( int  matrix_layout,
char  joba,
char  jobu,
char  jobv,
lapack_int  m,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  sva,
lapack_int  mv,
float *  v,
lapack_int  ldv,
float *  work,
lapack_int  lwork 
)

Definition at line 36 of file lapacke_sgesvj_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_sgesvj( &joba, &jobu, &jobv, &m, &n, a, &lda, sva, &mv, v, &ldv,
46  work, &lwork, &info );
47  if( info < 0 ) {
48  info = info - 1;
49  }
50  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51  lapack_int nrows_v = LAPACKE_lsame( jobv, 'v' ) ? MAX(0,n) :
52  ( LAPACKE_lsame( jobv, 'a' ) ? MAX(0,mv) : 0);
53  lapack_int lda_t = MAX(1,m);
54  lapack_int ldv_t = MAX(1,nrows_v);
55  float* a_t = NULL;
56  float* v_t = NULL;
57  /* Check leading dimension(s) */
58  if( lda < n ) {
59  info = -8;
60  LAPACKE_xerbla( "LAPACKE_sgesvj_work", info );
61  return info;
62  }
63  if( ldv < n ) {
64  info = -12;
65  LAPACKE_xerbla( "LAPACKE_sgesvj_work", info );
66  return info;
67  }
68  /* Allocate memory for temporary array(s) */
69  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
70  if( a_t == NULL ) {
72  goto exit_level_0;
73  }
74  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
75  v_t = (float*)LAPACKE_malloc( sizeof(float) * ldv_t * MAX(1,n) );
76  if( v_t == NULL ) {
78  goto exit_level_1;
79  }
80  }
81  /* Transpose input matrices */
82  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
83  if( LAPACKE_lsame( jobv, 'a' ) ) {
84  LAPACKE_sge_trans( matrix_layout, nrows_v, n, v, ldv, v_t, ldv_t );
85  }
86  /* Call LAPACK function and adjust info */
87  LAPACK_sgesvj( &joba, &jobu, &jobv, &m, &n, a_t, &lda_t, sva, &mv, v_t,
88  &ldv_t, work, &lwork, &info );
89  if( info < 0 ) {
90  info = info - 1;
91  }
92  /* Transpose output matrices */
93  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
94  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
95  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nrows_v, n, v_t, ldv_t, v,
96  ldv );
97  }
98  /* Release memory and exit */
99  if( LAPACKE_lsame( jobv, 'a' ) || LAPACKE_lsame( jobv, 'v' ) ) {
100  LAPACKE_free( v_t );
101  }
102 exit_level_1:
103  LAPACKE_free( a_t );
104 exit_level_0:
105  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
106  LAPACKE_xerbla( "LAPACKE_sgesvj_work", info );
107  }
108  } else {
109  info = -1;
110  LAPACKE_xerbla( "LAPACKE_sgesvj_work", info );
111  }
112  return info;
113 }
#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_sgesvj(char *joba, char *jobu, char *jobv, lapack_int *m, lapack_int *n, float *a, lapack_int *lda, float *sva, lapack_int *mv, float *v, lapack_int *ldv, float *work, lapack_int *lwork, lapack_int *info)
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