LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgels()

lapack_int LAPACKE_sgels ( int  matrix_layout,
char  trans,
lapack_int  m,
lapack_int  n,
lapack_int  nrhs,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb 
)

Definition at line 35 of file lapacke_sgels.c.

38 {
39  lapack_int info = 0;
40  lapack_int lwork = -1;
41  float* work = NULL;
42  float work_query;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_sgels", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_sge_nancheck( matrix_layout, m, n, a, lda ) ) {
51  return -6;
52  }
53  if( LAPACKE_sge_nancheck( matrix_layout, MAX(m,n), nrhs, b, ldb ) ) {
54  return -8;
55  }
56  }
57 #endif
58  /* Query optimal working array(s) size */
59  info = LAPACKE_sgels_work( matrix_layout, trans, m, n, nrhs, a, lda, b, ldb,
60  &work_query, lwork );
61  if( info != 0 ) {
62  goto exit_level_0;
63  }
64  lwork = (lapack_int)work_query;
65  /* Allocate memory for work arrays */
66  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
67  if( work == NULL ) {
69  goto exit_level_0;
70  }
71  /* Call middle-level interface */
72  info = LAPACKE_sgels_work( matrix_layout, trans, m, n, nrhs, a, lda, b, ldb,
73  work, lwork );
74  /* Release memory and exit */
75  LAPACKE_free( work );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_sgels", info );
79  }
80  return info;
81 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
lapack_int LAPACKE_sgels_work(int matrix_layout, char trans, lapack_int m, lapack_int n, lapack_int nrhs, float *a, lapack_int lda, float *b, lapack_int ldb, float *work, lapack_int lwork)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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