LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgtrfs()

lapack_int LAPACKE_sgtrfs ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const float *  dl,
const float *  d,
const float *  du,
const float *  dlf,
const float *  df,
const float *  duf,
const float *  du2,
const lapack_int ipiv,
const float *  b,
lapack_int  ldb,
float *  x,
lapack_int  ldx,
float *  ferr,
float *  berr 
)

Definition at line 35 of file lapacke_sgtrfs.c.

42{
43 lapack_int info = 0;
44 lapack_int* iwork = NULL;
45 float* work = NULL;
46 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
47 LAPACKE_xerbla( "LAPACKE_sgtrfs", -1 );
48 return -1;
49 }
50#ifndef LAPACK_DISABLE_NAN_CHECK
51 if( LAPACKE_get_nancheck() ) {
52 /* Optionally check input matrices for NaNs */
53 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54 return -13;
55 }
56 if( LAPACKE_s_nancheck( n, d, 1 ) ) {
57 return -6;
58 }
59 if( LAPACKE_s_nancheck( n, df, 1 ) ) {
60 return -9;
61 }
62 if( LAPACKE_s_nancheck( n-1, dl, 1 ) ) {
63 return -5;
64 }
65 if( LAPACKE_s_nancheck( n-1, dlf, 1 ) ) {
66 return -8;
67 }
68 if( LAPACKE_s_nancheck( n-1, du, 1 ) ) {
69 return -7;
70 }
71 if( LAPACKE_s_nancheck( n-2, du2, 1 ) ) {
72 return -11;
73 }
74 if( LAPACKE_s_nancheck( n-1, duf, 1 ) ) {
75 return -10;
76 }
77 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
78 return -15;
79 }
80 }
81#endif
82 /* Allocate memory for working array(s) */
83 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
84 if( iwork == NULL ) {
86 goto exit_level_0;
87 }
88 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
89 if( work == NULL ) {
91 goto exit_level_1;
92 }
93 /* Call middle-level interface */
94 info = LAPACKE_sgtrfs_work( matrix_layout, trans, n, nrhs, dl, d, du, dlf,
95 df, duf, du2, ipiv, b, ldb, x, ldx, ferr, berr,
96 work, iwork );
97 /* Release memory and exit */
98 LAPACKE_free( work );
99exit_level_1:
100 LAPACKE_free( iwork );
101exit_level_0:
102 if( info == LAPACK_WORK_MEMORY_ERROR ) {
103 LAPACKE_xerbla( "LAPACKE_sgtrfs", info );
104 }
105 return info;
106}
#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_sgtrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int nrhs, const float *dl, const float *d, const float *du, const float *dlf, const float *df, const float *duf, const float *du2, const lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *ferr, float *berr, float *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_s_nancheck(lapack_int n, const float *x, lapack_int incx)
lapack_logical LAPACKE_sge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const float *a, lapack_int lda)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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