LAPACK  3.7.1 LAPACK: Linear Algebra PACKage

## ◆ LAPACKE_sgetrf2_work()

 lapack_int LAPACKE_sgetrf2_work ( int matrix_layout, lapack_int m, lapack_int n, float * a, lapack_int lda, lapack_int * ipiv )

Definition at line 36 of file lapacke_sgetrf2_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_sgetrf2( &m, &n, a, &lda, ipiv, &info );
43  if( info < 0 ) {
44  info = info - 1;
45  }
46  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
47  lapack_int lda_t = MAX(1,m);
48  float* a_t = NULL;
49  /* Check leading dimension(s) */
50  if( lda < n ) {
51  info = -5;
52  LAPACKE_xerbla( "LAPACKE_sgetrf2_work", info );
53  return info;
54  }
55  /* Allocate memory for temporary array(s) */
56  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
57  if( a_t == NULL ) {
59  goto exit_level_0;
60  }
61  /* Transpose input matrices */
62  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
63  /* Call LAPACK function and adjust info */
64  LAPACK_sgetrf2( &m, &n, a_t, &lda_t, ipiv, &info );
65  if( info < 0 ) {
66  info = info - 1;
67  }
68  /* Transpose output matrices */
69  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
70  /* Release memory and exit */
71  LAPACKE_free( a_t );
72 exit_level_0:
73  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
74  LAPACKE_xerbla( "LAPACKE_sgetrf2_work", info );
75  }
76  } else {
77  info = -1;
78  LAPACKE_xerbla( "LAPACKE_sgetrf2_work", info );
79  }
80  return info;
81 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACK_sgetrf2(lapack_int *m, lapack_int *n, float *a, lapack_int *lda, lapack_int *ipiv, 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: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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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