LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dsgesv()

lapack_int LAPACKE_dsgesv ( int  matrix_layout,
lapack_int  n,
lapack_int  nrhs,
double *  a,
lapack_int  lda,
lapack_int ipiv,
double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
lapack_int iter 
)

Definition at line 36 of file lapacke_dsgesv.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_dsgesv", -1 );
46  return -1;
47  }
48 #ifndef LAPACK_DISABLE_NAN_CHECK
49  /* Optionally check input matrices for NaNs */
50  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
51  return -4;
52  }
53  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54  return -7;
55  }
56 #endif
57  /* Allocate memory for working array(s) */
58  swork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,n) * MAX(1,n+nrhs) );
59  if( swork == NULL ) {
61  goto exit_level_0;
62  }
63  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) * MAX(1,nrhs) );
64  if( work == NULL ) {
66  goto exit_level_1;
67  }
68  /* Call middle-level interface */
69  info = LAPACKE_dsgesv_work( matrix_layout, n, nrhs, a, lda, ipiv, b, ldb, x,
70  ldx, work, swork, iter );
71  /* Release memory and exit */
72  LAPACKE_free( work );
73 exit_level_1:
74  LAPACKE_free( swork );
75 exit_level_0:
76  if( info == LAPACK_WORK_MEMORY_ERROR ) {
77  LAPACKE_xerbla( "LAPACKE_dsgesv", info );
78  }
79  return info;
80 }
#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_dsgesv_work(int matrix_layout, lapack_int n, lapack_int nrhs, double *a, lapack_int lda, lapack_int *ipiv, 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
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