LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggsvp3()

lapack_int LAPACKE_sggsvp3 ( int  matrix_layout,
char  jobu,
char  jobv,
char  jobq,
lapack_int  m,
lapack_int  p,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
float  tola,
float  tolb,
lapack_int k,
lapack_int l,
float *  u,
lapack_int  ldu,
float *  v,
lapack_int  ldv,
float *  q,
lapack_int  ldq 
)

Definition at line 36 of file lapacke_sggsvp3.c.

42 {
43  lapack_int info = 0;
44  lapack_int* iwork = NULL;
45  float* tau = NULL;
46  float* work = NULL;
47  lapack_int lwork = -1;
48  float work_query;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_sggsvp3", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  if( LAPACKE_sge_nancheck( matrix_layout, m, n, a, lda ) ) {
57  return -8;
58  }
59  if( LAPACKE_sge_nancheck( matrix_layout, p, n, b, ldb ) ) {
60  return -10;
61  }
62  if( LAPACKE_s_nancheck( 1, &tola, 1 ) ) {
63  return -12;
64  }
65  if( LAPACKE_s_nancheck( 1, &tolb, 1 ) ) {
66  return -13;
67  }
68  }
69 #endif
70  /* Query optimal size for working array */
71  info = LAPACKE_sggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n,
72  a, lda, b, ldb, tola, tolb, k, l, u, ldu,
73  v, ldv, q, ldq, iwork, tau, &work_query,
74  lwork );
75  if( info != 0 )
76  goto exit_level_0;
77  lwork = work_query;
78  /* Allocate memory for working array(s) */
79  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
80  if( iwork == NULL ) {
82  goto exit_level_0;
83  }
84  tau = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) );
85  if( tau == NULL ) {
87  goto exit_level_1;
88  }
89  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
90  if( work == NULL ) {
92  goto exit_level_2;
93  }
94  /* Call middle-level interface */
95  info = LAPACKE_sggsvp3_work( matrix_layout, jobu, jobv, jobq, m, p, n, a, lda,
96  b, ldb, tola, tolb, k, l, u, ldu, v, ldv, q,
97  ldq, iwork, tau, work, lwork );
98  /* Release memory and exit */
99  LAPACKE_free( work );
100 exit_level_2:
101  LAPACKE_free( tau );
102 exit_level_1:
103  LAPACKE_free( iwork );
104 exit_level_0:
105  if( info == LAPACK_WORK_MEMORY_ERROR ) {
106  LAPACKE_xerbla( "LAPACKE_sggsvp3", info );
107  }
108  return info;
109 }
lapack_int LAPACKE_sggsvp3_work(int matrix_layout, char jobu, char jobv, char jobq, lapack_int m, lapack_int p, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, float tola, float tolb, lapack_int *k, lapack_int *l, float *u, lapack_int ldu, float *v, lapack_int ldv, float *q, lapack_int ldq, lapack_int *iwork, float *tau, float *work, lapack_int lwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
lapack_logical LAPACKE_s_nancheck(lapack_int n, const float *x, lapack_int incx)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
int LAPACKE_get_nancheck()
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