LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsposv()

lapack_int LAPACKE_dsposv ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
lapack_int iter 
)

Definition at line 36 of file lapacke_dsposv.c.

40 {
41  lapack_int info = 0;
42  float* swork = NULL;
43  double* work = NULL;
44  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
45  LAPACKE_xerbla( "LAPACKE_dsposv", -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_dpo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
52  return -5;
53  }
54  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
55  return -7;
56  }
57  }
58 #endif
59  /* Allocate memory for working array(s) */
60  swork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+nrhs) );
61  if( swork == NULL ) {
63  goto exit_level_0;
64  }
65  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) * MAX(1,nrhs) );
66  if( work == NULL ) {
68  goto exit_level_1;
69  }
70  /* Call middle-level interface */
71  info = LAPACKE_dsposv_work( matrix_layout, uplo, n, nrhs, a, lda, b, ldb, x,
72  ldx, work, swork, iter );
73  /* Release memory and exit */
74  LAPACKE_free( work );
75 exit_level_1:
76  LAPACKE_free( swork );
77 exit_level_0:
78  if( info == LAPACK_WORK_MEMORY_ERROR ) {
79  LAPACKE_xerbla( "LAPACKE_dsposv", info );
80  }
81  return info;
82 }
lapack_logical LAPACKE_dpo_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_int LAPACKE_dsposv_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, double *a, lapack_int lda, double *b, lapack_int ldb, double *x, lapack_int ldx, double *work, float *swork, lapack_int *iter)
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#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
int LAPACKE_get_nancheck()
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