LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgetsqrhrt_work()

lapack_int LAPACKE_sgetsqrhrt_work ( int  matrix_layout,
lapack_int  m,
lapack_int  n,
lapack_int  mb1,
lapack_int  nb1,
lapack_int  nb2,
float *  a,
lapack_int  lda,
float *  t,
lapack_int  ldt,
float *  work,
lapack_int  lwork 
)

Definition at line 35 of file lapacke_sgetsqrhrt_work.c.

40 {
41  lapack_int info = 0;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  LAPACK_sgetsqrhrt( &m, &n, &mb1, &nb1, &nb2, a, &lda, t, &ldt,
45  work, &lwork, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int lda_t = MAX(1,m);
51  float* a_t = NULL;
52  lapack_int ldt_t = MAX(1,nb2);
53  float* t_t = NULL;
54  /* Check leading dimension(s) */
55  if( lda < n ) {
56  info = -8;
57  LAPACKE_xerbla( "LAPACKE_sgetsqrhrt_work", info );
58  return info;
59  }
60  if( ldt < n ) {
61  info = -10;
62  LAPACKE_xerbla( "LAPACKE_sgetsqrhrt_work", info );
63  return info;
64  }
65  /* Query optimal working array(s) size if requested */
66  if( lwork == -1 ) {
67  LAPACK_sgetsqrhrt( &m, &n, &mb1, &nb1, &nb2, a, &lda_t, t, &ldt_t,
68  work, &lwork, &info );
69  return (info < 0) ? (info - 1) : info;
70  }
71  /* Allocate memory for temporary array(s) */
72  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
73  if( a_t == NULL ) {
75  goto exit_level_0;
76  }
77  t_t = (float*)LAPACKE_malloc( sizeof(float) * ldt_t * MAX(1,n) );
78  if( t_t == NULL ) {
80  goto exit_level_1;
81  }
82  /* Transpose input matrices */
83  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
84  /* Call LAPACK function and adjust info */
85  LAPACK_sgetsqrhrt( &m, &n, &mb1, &nb1, &nb2, a_t, &lda_t, t_t, &ldt_t,
86  work, &lwork, &info );
87  if( info < 0 ) {
88  info = info - 1;
89  }
90  /* Transpose output matrices */
91  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
92  LAPACKE_sge_trans( LAPACK_COL_MAJOR, nb2, n, t_t, ldt_t, t, ldt );
93  /* Release memory and exit */
94  LAPACKE_free( t_t );
95 exit_level_1:
96  LAPACKE_free( a_t );
97 exit_level_0:
98  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
99  LAPACKE_xerbla( "LAPACKE_sgetsqrhrt_work", info );
100  }
101  } else {
102  info = -1;
103  LAPACKE_xerbla( "LAPACKE_sgetsqrhrt_work", info );
104  }
105  return info;
106 }
#define lapack_int
Definition: lapack.h:83
void LAPACK_sgetsqrhrt(lapack_int const *m, lapack_int const *n, lapack_int const *mb1, lapack_int const *nb1, lapack_int const *nb2, float *A, lapack_int const *lda, float *T, lapack_int const *ldt, float *work, lapack_int const *lwork, lapack_int *info)
#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
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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