LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_slantr_work()

float LAPACKE_slantr_work ( int  matrix_layout,
char  norm,
char  uplo,
char  diag,
lapack_int  m,
lapack_int  n,
const float *  a,
lapack_int  lda,
float *  work 
)

Definition at line 36 of file lapacke_slantr_work.c.

39 {
40  lapack_int info = 0;
41  float res = 0.;
42  if( matrix_layout == LAPACK_COL_MAJOR ) {
43  /* Call LAPACK function and adjust info */
44  res = LAPACK_slantr( &norm, &uplo, &diag, &m, &n, a, &lda, work );
45  if( info < 0 ) {
46  info = info - 1;
47  }
48  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49  lapack_int lda_t = MAX(1,m);
50  float* a_t = NULL;
51  /* Check leading dimension(s) */
52  if( lda < n ) {
53  info = -8;
54  LAPACKE_xerbla( "LAPACKE_slantr_work", info );
55  return info;
56  }
57  /* Allocate memory for temporary array(s) */
58  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,MAX(m,n)) );
59  if( a_t == NULL ) {
61  goto exit_level_0;
62  }
63  /* Transpose input matrices */
64  LAPACKE_str_trans( matrix_layout, uplo, diag, MAX(m,n), a, lda, a_t, lda_t );
65  /* Call LAPACK function and adjust info */
66  res = LAPACK_slantr( &norm, &uplo, &diag, &m, &n, a_t, &lda_t, work );
67  info = 0; /* LAPACK call is ok! */
68  /* Release memory and exit */
69  LAPACKE_free( a_t );
70 exit_level_0:
71  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
72  LAPACKE_xerbla( "LAPACKE_slantr_work", info );
73  }
74  } else {
75  info = -1;
76  LAPACKE_xerbla( "LAPACKE_slantr_work", info );
77  }
78  return res;
79 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
void LAPACKE_str_trans(int matrix_layout, char uplo, char diag, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
#define LAPACKE_free(p)
Definition: lapacke.h:113
float LAPACK_slantr(char *norm, char *uplo, char *diag, lapack_int *m, lapack_int *n, const float *a, lapack_int *lda, float *work)
#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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