LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_dptrfs()

lapack_int LAPACKE_dptrfs ( int  matrix_layout,
lapack_int  n,
lapack_int  nrhs,
const double *  d,
const double *  e,
const double *  df,
const double *  ef,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  ferr,
double *  berr 
)

Definition at line 35 of file lapacke_dptrfs.c.

40{
41 lapack_int info = 0;
42 double* work = NULL;
43 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
44 LAPACKE_xerbla( "LAPACKE_dptrfs", -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_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
51 return -8;
52 }
53 if( LAPACKE_d_nancheck( n, d, 1 ) ) {
54 return -4;
55 }
56 if( LAPACKE_d_nancheck( n, df, 1 ) ) {
57 return -6;
58 }
59 if( LAPACKE_d_nancheck( n-1, e, 1 ) ) {
60 return -5;
61 }
62 if( LAPACKE_d_nancheck( n-1, ef, 1 ) ) {
63 return -7;
64 }
65 if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
66 return -10;
67 }
68 }
69#endif
70 /* Allocate memory for working array(s) */
71 work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,2*n) );
72 if( work == NULL ) {
74 goto exit_level_0;
75 }
76 /* Call middle-level interface */
77 info = LAPACKE_dptrfs_work( matrix_layout, n, nrhs, d, e, df, ef, b, ldb, x,
78 ldx, ferr, berr, work );
79 /* Release memory and exit */
80 LAPACKE_free( work );
81exit_level_0:
82 if( info == LAPACK_WORK_MEMORY_ERROR ) {
83 LAPACKE_xerbla( "LAPACKE_dptrfs", info );
84 }
85 return info;
86}
#define lapack_int
Definition: lapack.h:87
lapack_int LAPACKE_dptrfs_work(int matrix_layout, lapack_int n, lapack_int nrhs, const double *d, const double *e, const double *df, const double *ef, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *ferr, double *berr, double *work)
#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
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_d_nancheck(lapack_int n, const double *x, lapack_int incx)
#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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