LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dpprfs()

lapack_int LAPACKE_dpprfs ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  ap,
const double *  afp,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  ferr,
double *  berr 
)

Definition at line 35 of file lapacke_dpprfs.c.

39{
40 lapack_int info = 0;
41 lapack_int* iwork = NULL;
42 double* work = NULL;
43 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44 LAPACKE_xerbla( "LAPACKE_dpprfs", -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_dpp_nancheck( n, afp ) ) {
51 return -6;
52 }
53 if( LAPACKE_dpp_nancheck( n, ap ) ) {
54 return -5;
55 }
56 if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
57 return -7;
58 }
59 if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
60 return -9;
61 }
62 }
63#endif
64 /* Allocate memory for working array(s) */
65 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
66 if( iwork == NULL ) {
68 goto exit_level_0;
69 }
70 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
71 if( work == NULL ) {
73 goto exit_level_1;
74 }
75 /* Call middle-level interface */
76 info = LAPACKE_dpprfs_work( matrix_layout, uplo, n, nrhs, ap, afp, b, ldb, x,
77 ldx, ferr, berr, work, iwork );
78 /* Release memory and exit */
79 LAPACKE_free( work );
80exit_level_1:
81 LAPACKE_free( iwork );
82exit_level_0:
83 if( info == LAPACK_WORK_MEMORY_ERROR ) {
84 LAPACKE_xerbla( "LAPACKE_dpprfs", 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_dpprfs_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, const double *ap, const double *afp, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *ferr, double *berr, double *work, lapack_int *iwork)
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_dpp_nancheck(lapack_int n, const double *ap)
#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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