LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgtsv_work()

lapack_int LAPACKE_zgtsv_work ( int  matrix_layout,
lapack_int  n,
lapack_int  nrhs,
lapack_complex_double dl,
lapack_complex_double d,
lapack_complex_double du,
lapack_complex_double b,
lapack_int  ldb 
)

Definition at line 36 of file lapacke_zgtsv_work.c.

41 {
42  lapack_int info = 0;
43  if( matrix_layout == LAPACK_COL_MAJOR ) {
44  /* Call LAPACK function and adjust info */
45  LAPACK_zgtsv( &n, &nrhs, dl, d, du, b, &ldb, &info );
46  if( info < 0 ) {
47  info = info - 1;
48  }
49  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
50  lapack_int ldb_t = MAX(1,n);
51  lapack_complex_double* b_t = NULL;
52  /* Check leading dimension(s) */
53  if( ldb < nrhs ) {
54  info = -8;
55  LAPACKE_xerbla( "LAPACKE_zgtsv_work", info );
56  return info;
57  }
58  /* Allocate memory for temporary array(s) */
59  b_t = (lapack_complex_double*)
61  ldb_t * MAX(1,nrhs) );
62  if( b_t == NULL ) {
64  goto exit_level_0;
65  }
66  /* Transpose input matrices */
67  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
68  /* Call LAPACK function and adjust info */
69  LAPACK_zgtsv( &n, &nrhs, dl, d, du, b_t, &ldb_t, &info );
70  if( info < 0 ) {
71  info = info - 1;
72  }
73  /* Transpose output matrices */
74  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
75  /* Release memory and exit */
76  LAPACKE_free( b_t );
77 exit_level_0:
78  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
79  LAPACKE_xerbla( "LAPACKE_zgtsv_work", info );
80  }
81  } else {
82  info = -1;
83  LAPACKE_xerbla( "LAPACKE_zgtsv_work", info );
84  }
85  return info;
86 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
void LAPACK_zgtsv(lapack_int *n, lapack_int *nrhs, lapack_complex_double *dl, lapack_complex_double *d, lapack_complex_double *du, lapack_complex_double *b, lapack_int *ldb, lapack_int *info)
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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)
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