LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
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◆ LAPACKE_zgbsv_work()

lapack_int LAPACKE_zgbsv_work ( int  matrix_layout,
lapack_int  n,
lapack_int  kl,
lapack_int  ku,
lapack_int  nrhs,
lapack_complex_double ab,
lapack_int  ldab,
lapack_int ipiv,
lapack_complex_double b,
lapack_int  ldb 
)

Definition at line 35 of file lapacke_zgbsv_work.c.

40{
41 lapack_int info = 0;
42 if( matrix_layout == LAPACK_COL_MAJOR ) {
43 /* Call LAPACK function and adjust info */
44 LAPACK_zgbsv( &n, &kl, &ku, &nrhs, ab, &ldab, ipiv, b, &ldb, &info );
45 if( info < 0 ) {
46 info = info - 1;
47 }
48 } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
49 lapack_int ldab_t = MAX(1,2*kl+ku+1);
50 lapack_int ldb_t = MAX(1,n);
51 lapack_complex_double* ab_t = NULL;
52 lapack_complex_double* b_t = NULL;
53 /* Check leading dimension(s) */
54 if( ldab < n ) {
55 info = -7;
56 LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
57 return info;
58 }
59 if( ldb < nrhs ) {
60 info = -10;
61 LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
62 return info;
63 }
64 /* Allocate memory for temporary array(s) */
65 ab_t = (lapack_complex_double*)
66 LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
67 if( ab_t == NULL ) {
69 goto exit_level_0;
70 }
73 ldb_t * MAX(1,nrhs) );
74 if( b_t == NULL ) {
76 goto exit_level_1;
77 }
78 /* Transpose input matrices */
79 LAPACKE_zgb_trans( matrix_layout, n, n, kl, kl+ku, ab, ldab, ab_t,
80 ldab_t );
81 LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
82 /* Call LAPACK function and adjust info */
83 LAPACK_zgbsv( &n, &kl, &ku, &nrhs, ab_t, &ldab_t, ipiv, b_t, &ldb_t,
84 &info );
85 if( info < 0 ) {
86 info = info - 1;
87 }
88 /* Transpose output matrices */
89 LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, kl+ku, ab_t, ldab_t, ab,
90 ldab );
91 LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
92 /* Release memory and exit */
93 LAPACKE_free( b_t );
94exit_level_1:
95 LAPACKE_free( ab_t );
96exit_level_0:
97 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
98 LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
99 }
100 } else {
101 info = -1;
102 LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
103 }
104 return info;
105}
#define lapack_int
Definition: lapack.h:87
#define LAPACK_zgbsv
Definition: lapack.h:961
#define lapack_complex_double
Definition: lapack.h:64
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
void LAPACKE_zge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
void LAPACKE_zgb_trans(int matrix_layout, lapack_int m, lapack_int n, lapack_int kl, lapack_int ku, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#define MAX(x, y)
Definition: lapacke_utils.h:46
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