LAPACK  3.10.1
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 35 of file lapacke_dsposv.c.

39 {
40  lapack_int info = 0;
41  float* swork = NULL;
42  double* work = NULL;
43  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44  LAPACKE_xerbla( "LAPACKE_dsposv", -1 );
45  return -1;
46  }
47 #ifndef LAPACK_DISABLE_NAN_CHECK
48  if( LAPACKE_get_nancheck() ) {
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dpo_nancheck( matrix_layout, uplo, n, a, lda ) ) {
51  return -5;
52  }
53  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54  return -7;
55  }
56  }
57 #endif
58  /* Allocate memory for working array(s) */
59  swork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+nrhs) );
60  if( swork == NULL ) {
62  goto exit_level_0;
63  }
64  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) * MAX(1,nrhs) );
65  if( work == NULL ) {
67  goto exit_level_1;
68  }
69  /* Call middle-level interface */
70  info = LAPACKE_dsposv_work( matrix_layout, uplo, n, nrhs, a, lda, b, ldb, x,
71  ldx, work, swork, iter );
72  /* Release memory and exit */
73  LAPACKE_free( work );
74 exit_level_1:
75  LAPACKE_free( swork );
76 exit_level_0:
77  if( info == LAPACK_WORK_MEMORY_ERROR ) {
78  LAPACKE_xerbla( "LAPACKE_dsposv", info );
79  }
80  return info;
81 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
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)
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
int LAPACKE_get_nancheck(void)
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
void LAPACKE_xerbla(const char *name, lapack_int info)
lapack_logical LAPACKE_dpo_nancheck(int matrix_layout, char uplo, lapack_int n, const double *a, lapack_int lda)
#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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