LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgetrf_work()

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

Definition at line 35 of file lapacke_sgetrf_work.c.

37 {
38  lapack_int info = 0;
39  if( matrix_layout == LAPACK_COL_MAJOR ) {
40  /* Call LAPACK function and adjust info */
41  LAPACK_sgetrf( &m, &n, a, &lda, ipiv, &info );
42  if( info < 0 ) {
43  info = info - 1;
44  }
45  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
46  lapack_int lda_t = MAX(1,m);
47  float* a_t = NULL;
48  /* Check leading dimension(s) */
49  if( lda < n ) {
50  info = -5;
51  LAPACKE_xerbla( "LAPACKE_sgetrf_work", info );
52  return info;
53  }
54  /* Allocate memory for temporary array(s) */
55  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
56  if( a_t == NULL ) {
58  goto exit_level_0;
59  }
60  /* Transpose input matrices */
61  LAPACKE_sge_trans( matrix_layout, m, n, a, lda, a_t, lda_t );
62  /* Call LAPACK function and adjust info */
63  LAPACK_sgetrf( &m, &n, a_t, &lda_t, ipiv, &info );
64  if( info < 0 ) {
65  info = info - 1;
66  }
67  /* Transpose output matrices */
68  LAPACKE_sge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda );
69  /* Release memory and exit */
70  LAPACKE_free( a_t );
71 exit_level_0:
72  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
73  LAPACKE_xerbla( "LAPACKE_sgetrf_work", info );
74  }
75  } else {
76  info = -1;
77  LAPACKE_xerbla( "LAPACKE_sgetrf_work", info );
78  }
79  return info;
80 }
#define lapack_int
Definition: lapack.h:83
void LAPACK_sgetrf(lapack_int const *m, lapack_int const *n, float *A, lapack_int const *lda, lapack_int *ipiv, 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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