LAPACK  3.7.1 LAPACK: Linear Algebra PACKage

## ◆ LAPACKE_spstrf_work()

 lapack_int LAPACKE_spstrf_work ( int matrix_layout, char uplo, lapack_int n, float * a, lapack_int lda, lapack_int * piv, lapack_int * rank, float tol, float * work )

Definition at line 36 of file lapacke_spstrf_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_spstrf( &uplo, &n, a, &lda, piv, rank, &tol, work, &info );
44  if( info < 0 ) {
45  info = info - 1;
46  }
47  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
48  lapack_int lda_t = MAX(1,n);
49  float* a_t = NULL;
50  /* Check leading dimension(s) */
51  if( lda < n ) {
52  info = -5;
53  LAPACKE_xerbla( "LAPACKE_spstrf_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
58  if( a_t == NULL ) {
60  goto exit_level_0;
61  }
62  /* Transpose input matrices */
63  LAPACKE_spo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
64  /* Call LAPACK function and adjust info */
65  LAPACK_spstrf( &uplo, &n, a_t, &lda_t, piv, rank, &tol, work, &info );
66  if( info < 0 ) {
67  info = info - 1;
68  }
69  /* Transpose output matrices */
70  LAPACKE_spo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
71  /* Release memory and exit */
72  LAPACKE_free( a_t );
73 exit_level_0:
74  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
75  LAPACKE_xerbla( "LAPACKE_spstrf_work", info );
76  }
77  } else {
78  info = -1;
79  LAPACKE_xerbla( "LAPACKE_spstrf_work", info );
80  }
81  return info;
82 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_spstrf(char *uplo, lapack_int *n, float *a, lapack_int *lda, lapack_int *piv, lapack_int *rank, float *tol, float *work, lapack_int *info)
#define MAX(x, y)
Definition: lapacke_utils.h:47
void LAPACKE_spo_trans(int matrix_layout, char uplo, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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