LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgebal_work()

lapack_int LAPACKE_dgebal_work ( int  matrix_layout,
char  job,
lapack_int  n,
double *  a,
lapack_int  lda,
lapack_int ilo,
lapack_int ihi,
double *  scale 
)

Definition at line 36 of file lapacke_dgebal_work.c.

39 {
40  lapack_int info = 0;
41  if( matrix_layout == LAPACK_COL_MAJOR ) {
42  /* Call LAPACK function and adjust info */
43  LAPACK_dgebal( &job, &n, a, &lda, ilo, ihi, scale, &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  double* a_t = NULL;
50  /* Check leading dimension(s) */
51  if( lda < n ) {
52  info = -5;
53  LAPACKE_xerbla( "LAPACKE_dgebal_work", info );
54  return info;
55  }
56  /* Allocate memory for temporary array(s) */
57  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
58  LAPACKE_lsame( job, 's' ) ) {
59  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
60  if( a_t == NULL ) {
62  goto exit_level_0;
63  }
64  }
65  /* Transpose input matrices */
66  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
67  LAPACKE_lsame( job, 's' ) ) {
68  LAPACKE_dge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
69  }
70  /* Call LAPACK function and adjust info */
71  LAPACK_dgebal( &job, &n, a_t, &lda_t, ilo, ihi, scale, &info );
72  if( info < 0 ) {
73  info = info - 1;
74  }
75  /* Transpose output matrices */
76  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
77  LAPACKE_lsame( job, 's' ) ) {
78  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
79  }
80  /* Release memory and exit */
81  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
82  LAPACKE_lsame( job, 's' ) ) {
83  LAPACKE_free( a_t );
84  }
85 exit_level_0:
86  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
87  LAPACKE_xerbla( "LAPACKE_dgebal_work", info );
88  }
89  } else {
90  info = -1;
91  LAPACKE_xerbla( "LAPACKE_dgebal_work", info );
92  }
93  return info;
94 }
void LAPACK_dgebal(char *job, lapack_int *n, double *a, lapack_int *lda, lapack_int *ilo, lapack_int *ihi, double *scale, lapack_int *info)
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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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