LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sgebal_work()

lapack_int LAPACKE_sgebal_work ( int  matrix_layout,
char  job,
lapack_int  n,
float *  a,
lapack_int  lda,
lapack_int ilo,
lapack_int ihi,
float *  scale 
)

Definition at line 35 of file lapacke_sgebal_work.c.

38 {
39  lapack_int info = 0;
40  if( matrix_layout == LAPACK_COL_MAJOR ) {
41  /* Call LAPACK function and adjust info */
42  LAPACK_sgebal( &job, &n, a, &lda, ilo, ihi, scale, &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,n);
48  float* a_t = NULL;
49  /* Check leading dimension(s) */
50  if( lda < n ) {
51  info = -5;
52  LAPACKE_xerbla( "LAPACKE_sgebal_work", info );
53  return info;
54  }
55  /* Allocate memory for temporary array(s) */
56  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
57  LAPACKE_lsame( job, 's' ) ) {
58  a_t = (float*)LAPACKE_malloc( sizeof(float) * lda_t * MAX(1,n) );
59  if( a_t == NULL ) {
61  goto exit_level_0;
62  }
63  }
64  /* Transpose input matrices */
65  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
66  LAPACKE_lsame( job, 's' ) ) {
67  LAPACKE_sge_trans( matrix_layout, n, n, a, lda, a_t, lda_t );
68  }
69  /* Call LAPACK function and adjust info */
70  LAPACK_sgebal( &job, &n, a_t, &lda_t, ilo, ihi, scale, &info );
71  if( info < 0 ) {
72  info = info - 1;
73  }
74  /* Transpose output matrices */
75  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
76  LAPACKE_lsame( job, 's' ) ) {
77  LAPACKE_sge_trans( LAPACK_COL_MAJOR, n, n, a_t, lda_t, a, lda );
78  }
79  /* Release memory and exit */
80  if( LAPACKE_lsame( job, 'b' ) || LAPACKE_lsame( job, 'p' ) ||
81  LAPACKE_lsame( job, 's' ) ) {
82  LAPACKE_free( a_t );
83  }
84 exit_level_0:
85  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
86  LAPACKE_xerbla( "LAPACKE_sgebal_work", info );
87  }
88  } else {
89  info = -1;
90  LAPACKE_xerbla( "LAPACKE_sgebal_work", info );
91  }
92  return info;
93 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_sgebal(...)
Definition: lapack.h:1386
#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
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
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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