LAPACK  3.10.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_sggbal()

lapack_int LAPACKE_sggbal ( int  matrix_layout,
char  job,
lapack_int  n,
float *  a,
lapack_int  lda,
float *  b,
lapack_int  ldb,
lapack_int ilo,
lapack_int ihi,
float *  lscale,
float *  rscale 
)

Definition at line 35 of file lapacke_sggbal.c.

39 {
40  lapack_int info = 0;
41  /* Additional scalars declarations for work arrays */
42  lapack_int lwork;
43  float* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_sggbal", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  if( LAPACKE_get_nancheck() ) {
50  /* Optionally check input matrices for NaNs */
51  if( LAPACKE_lsame( job, 'p' ) || LAPACKE_lsame( job, 's' ) ||
52  LAPACKE_lsame( job, 'b' ) ) {
53  if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
54  return -4;
55  }
56  }
57  if( LAPACKE_lsame( job, 'p' ) || LAPACKE_lsame( job, 's' ) ||
58  LAPACKE_lsame( job, 'b' ) ) {
59  if( LAPACKE_sge_nancheck( matrix_layout, n, n, b, ldb ) ) {
60  return -6;
61  }
62  }
63  }
64 #endif
65  /* Additional scalars initializations for work arrays */
66  if( LAPACKE_lsame( job, 's' ) || LAPACKE_lsame( job, 'b' ) ) {
67  lwork = MAX(1,6*n);
68  } else {
69  lwork = 1;
70  }
71  /* Allocate memory for working array(s) */
72  work = (float*)LAPACKE_malloc( sizeof(float) * lwork );
73  if( work == NULL ) {
75  goto exit_level_0;
76  }
77  /* Call middle-level interface */
78  info = LAPACKE_sggbal_work( matrix_layout, job, n, a, lda, b, ldb, ilo, ihi,
79  lscale, rscale, work );
80  /* Release memory and exit */
81  LAPACKE_free( work );
82 exit_level_0:
83  if( info == LAPACK_WORK_MEMORY_ERROR ) {
84  LAPACKE_xerbla( "LAPACKE_sggbal", info );
85  }
86  return info;
87 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
lapack_int LAPACKE_sggbal_work(int matrix_layout, char job, lapack_int n, float *a, lapack_int lda, float *b, lapack_int ldb, lapack_int *ilo, lapack_int *ihi, float *lscale, float *rscale, float *work)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:35
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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