LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dggbal()

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

Definition at line 35 of file lapacke_dggbal.c.

39{
40 lapack_int info = 0;
41 /* Additional scalars declarations for work arrays */
42 lapack_int lwork;
43 double* work = NULL;
44 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45 LAPACKE_xerbla( "LAPACKE_dggbal", -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_dge_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_dge_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 = (double*)LAPACKE_malloc( sizeof(double) * lwork );
73 if( work == NULL ) {
75 goto exit_level_0;
76 }
77 /* Call middle-level interface */
78 info = LAPACKE_dggbal_work( matrix_layout, job, n, a, lda, b, ldb, ilo, ihi,
79 lscale, rscale, work );
80 /* Release memory and exit */
81 LAPACKE_free( work );
82exit_level_0:
83 if( info == LAPACK_WORK_MEMORY_ERROR ) {
84 LAPACKE_xerbla( "LAPACKE_dggbal", info );
85 }
86 return info;
87}
#define lapack_int
Definition: lapack.h:87
#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
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
lapack_int LAPACKE_dggbal_work(int matrix_layout, char job, lapack_int n, double *a, lapack_int lda, double *b, lapack_int ldb, lapack_int *ilo, lapack_int *ihi, double *lscale, double *rscale, double *work)
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)
#define MAX(x, y)
Definition: lapacke_utils.h:46
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
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