LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_sgerfs()

lapack_int LAPACKE_sgerfs ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const float *  a,
lapack_int  lda,
const float *  af,
lapack_int  ldaf,
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_sgerfs.c.

41{
42 lapack_int info = 0;
43 lapack_int* iwork = NULL;
44 float* work = NULL;
45 if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
46 LAPACKE_xerbla( "LAPACKE_sgerfs", -1 );
47 return -1;
48 }
49#ifndef LAPACK_DISABLE_NAN_CHECK
50 if( LAPACKE_get_nancheck() ) {
51 /* Optionally check input matrices for NaNs */
52 if( LAPACKE_sge_nancheck( matrix_layout, n, n, a, lda ) ) {
53 return -5;
54 }
55 if( LAPACKE_sge_nancheck( matrix_layout, n, n, af, ldaf ) ) {
56 return -7;
57 }
58 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
59 return -10;
60 }
61 if( LAPACKE_sge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
62 return -12;
63 }
64 }
65#endif
66 /* Allocate memory for working array(s) */
67 iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
68 if( iwork == NULL ) {
70 goto exit_level_0;
71 }
72 work = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n) );
73 if( work == NULL ) {
75 goto exit_level_1;
76 }
77 /* Call middle-level interface */
78 info = LAPACKE_sgerfs_work( matrix_layout, trans, n, nrhs, a, lda, af, ldaf,
79 ipiv, b, ldb, x, ldx, ferr, berr, work, iwork );
80 /* Release memory and exit */
81 LAPACKE_free( work );
82exit_level_1:
83 LAPACKE_free( iwork );
84exit_level_0:
85 if( info == LAPACK_WORK_MEMORY_ERROR ) {
86 LAPACKE_xerbla( "LAPACKE_sgerfs", info );
87 }
88 return info;
89}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:55
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
lapack_int LAPACKE_sgerfs_work(int matrix_layout, char trans, lapack_int n, lapack_int nrhs, const float *a, lapack_int lda, const float *af, lapack_int ldaf, const lapack_int *ipiv, const float *b, lapack_int ldb, float *x, lapack_int ldx, float *ferr, float *berr, float *work, lapack_int *iwork)
#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_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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