LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_stbrfs_work()

lapack_int LAPACKE_stbrfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  kd,
lapack_int  nrhs,
const float *  ab,
lapack_int  ldab,
const float *  b,
lapack_int  ldb,
const float *  x,
lapack_int  ldx,
float *  ferr,
float *  berr,
float *  work,
lapack_int *  iwork 
)

Definition at line 35 of file lapacke_stbrfs_work.c.

41{
42 lapack_int info = 0;
43 if( matrix_layout == LAPACK_COL_MAJOR ) {
44 /* Call LAPACK function and adjust info */
45 LAPACK_stbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab, &ldab, b, &ldb,
46 x, &ldx, ferr, berr, work, iwork, &info );
47 if( info < 0 ) {
48 info = info - 1;
49 }
50 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
51 lapack_int ldab_t = MAX(1,kd+1);
52 lapack_int ldb_t = MAX(1,n);
53 lapack_int ldx_t = MAX(1,n);
54 float* ab_t = NULL;
55 float* b_t = NULL;
56 float* x_t = NULL;
57 /* Check leading dimension(s) */
58 if( ldab < n ) {
59 info = -9;
60 LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
61 return info;
62 }
63 if( ldb < nrhs ) {
64 info = -11;
65 LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
66 return info;
67 }
68 if( ldx < nrhs ) {
69 info = -13;
70 LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
71 return info;
72 }
73 /* Allocate memory for temporary array(s) */
74 ab_t = (float*)LAPACKE_malloc( sizeof(float) * ldab_t * MAX(1,n) );
75 if( ab_t == NULL ) {
76 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
77 goto exit_level_0;
78 }
79 b_t = (float*)LAPACKE_malloc( sizeof(float) * ldb_t * MAX(1,nrhs) );
80 if( b_t == NULL ) {
81 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
82 goto exit_level_1;
83 }
84 x_t = (float*)LAPACKE_malloc( sizeof(float) * ldx_t * MAX(1,nrhs) );
85 if( x_t == NULL ) {
86 info = LAPACK_TRANSPOSE_MEMORY_ERROR;
87 goto exit_level_2;
88 }
89 /* Transpose input matrices */
90 LAPACKE_stb_trans( matrix_layout, uplo, diag, n, kd, ab, ldab, ab_t,
91 ldab_t );
92 LAPACKE_sge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
93 LAPACKE_sge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
94 /* Call LAPACK function and adjust info */
95 LAPACK_stbrfs( &uplo, &trans, &diag, &n, &kd, &nrhs, ab_t, &ldab_t, b_t,
96 &ldb_t, x_t, &ldx_t, ferr, berr, work, iwork, &info );
97 if( info < 0 ) {
98 info = info - 1;
99 }
100 /* Release memory and exit */
101 LAPACKE_free( x_t );
102exit_level_2:
103 LAPACKE_free( b_t );
104exit_level_1:
105 LAPACKE_free( ab_t );
106exit_level_0:
107 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
108 LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
109 }
110 } else {
111 info = -1;
112 LAPACKE_xerbla( "LAPACKE_stbrfs_work", info );
113 }
114 return info;
115}
lapack_int
#define lapack_int
Definition: lapack.h:87
LAPACK_stbrfs
#define LAPACK_stbrfs(...)
Definition: lapack.h:19694
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:46
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:36
LAPACKE_sge_trans
void LAPACKE_sge_trans(int matrix_layout, lapack_int m, lapack_int n, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_sge_trans.c:39
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:46
LAPACKE_stb_trans
void LAPACKE_stb_trans(int matrix_layout, char uplo, char diag, lapack_int n, lapack_int kd, const float *in, lapack_int ldin, float *out, lapack_int ldout)
Definition: lapacke_stb_trans.c:39
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