LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgerfsx()

lapack_int LAPACKE_dgerfsx ( int  matrix_layout,
char  trans,
char  equed,
lapack_int  n,
lapack_int  nrhs,
const double *  a,
lapack_int  lda,
const double *  af,
lapack_int  ldaf,
const lapack_int ipiv,
const double *  r,
const double *  c,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  rcond,
double *  berr,
lapack_int  n_err_bnds,
double *  err_bnds_norm,
double *  err_bnds_comp,
lapack_int  nparams,
double *  params 
)

Definition at line 36 of file lapacke_dgerfsx.c.

45 {
46  lapack_int info = 0;
47  lapack_int* iwork = NULL;
48  double* work = NULL;
49  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
50  LAPACKE_xerbla( "LAPACKE_dgerfsx", -1 );
51  return -1;
52  }
53 #ifndef LAPACK_DISABLE_NAN_CHECK
54  if( LAPACKE_get_nancheck() ) {
55  /* Optionally check input matrices for NaNs */
56  if( LAPACKE_dge_nancheck( matrix_layout, n, n, a, lda ) ) {
57  return -6;
58  }
59  if( LAPACKE_dge_nancheck( matrix_layout, n, n, af, ldaf ) ) {
60  return -8;
61  }
62  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
63  return -13;
64  }
65  if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'c' ) ) {
66  if( LAPACKE_d_nancheck( n, c, 1 ) ) {
67  return -12;
68  }
69  }
70  if( nparams>0 ) {
71  if( LAPACKE_d_nancheck( nparams, params, 1 ) ) {
72  return -23;
73  }
74  }
75  if( LAPACKE_lsame( equed, 'b' ) || LAPACKE_lsame( equed, 'r' ) ) {
76  if( LAPACKE_d_nancheck( n, r, 1 ) ) {
77  return -11;
78  }
79  }
80  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
81  return -15;
82  }
83  }
84 #endif
85  /* Allocate memory for working array(s) */
86  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
87  if( iwork == NULL ) {
89  goto exit_level_0;
90  }
91  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,4*n) );
92  if( work == NULL ) {
94  goto exit_level_1;
95  }
96  /* Call middle-level interface */
97  info = LAPACKE_dgerfsx_work( matrix_layout, trans, equed, n, nrhs, a, lda,
98  af, ldaf, ipiv, r, c, b, ldb, x, ldx, rcond,
99  berr, n_err_bnds, err_bnds_norm, err_bnds_comp,
100  nparams, params, work, iwork );
101  /* Release memory and exit */
102  LAPACKE_free( work );
103 exit_level_1:
104  LAPACKE_free( iwork );
105 exit_level_0:
106  if( info == LAPACK_WORK_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_dgerfsx", info );
108  }
109  return info;
110 }
lapack_int LAPACKE_dgerfsx_work(int matrix_layout, char trans, char equed, lapack_int n, lapack_int nrhs, const double *a, lapack_int lda, const double *af, lapack_int ldaf, const lapack_int *ipiv, const double *r, const double *c, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *rcond, double *berr, lapack_int n_err_bnds, double *err_bnds_norm, double *err_bnds_comp, lapack_int nparams, double *params, double *work, lapack_int *iwork)
#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_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
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#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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