LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sorgtr()

lapack_int LAPACKE_sorgtr ( int  matrix_layout,
char  uplo,
lapack_int  n,
float *  a,
lapack_int  lda,
const float *  tau 
)

Definition at line 36 of file lapacke_sorgtr.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_sorgtr", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  /* Optionally check input matrices for NaNs */
49  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
50  return -4;
51  }
52  if( LAPACKE_s_nancheck( n-1, tau, 1 ) ) {
53  return -6;
54  }
55 #endif
56  /* Query optimal working array(s) size */
57  info = LAPACKE_sorgtr_work( matrix_layout, uplo, n, a, lda, tau, &work_query,
58  lwork );
59  if( info != 0 ) {
60  goto exit_level_0;
61  }
62  lwork = (lapack_int)work_query;
63  /* Allocate memory for work arrays */
64  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
65  if( work == NULL ) {
67  goto exit_level_0;
68  }
69  /* Call middle-level interface */
70  info = LAPACKE_sorgtr_work( matrix_layout, uplo, n, a, lda, tau, work,
71  lwork );
72  /* Release memory and exit */
73  LAPACKE_free( work );
74 exit_level_0:
75  if( info == LAPACK_WORK_MEMORY_ERROR ) {
76  LAPACKE_xerbla( "LAPACKE_sorgtr", info );
77  }
78  return info;
79 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_int LAPACKE_sorgtr_work(int matrix_layout, char uplo, lapack_int n, float *a, lapack_int lda, const float *tau, float *work, lapack_int lwork)
#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 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
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