LAPACK  3.7.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dgtsvx()

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

Definition at line 36 of file lapacke_dgtsvx.c.

43 {
44  lapack_int info = 0;
45  lapack_int* iwork = NULL;
46  double* work = NULL;
47  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
48  LAPACKE_xerbla( "LAPACKE_dgtsvx", -1 );
49  return -1;
50  }
51 #ifndef LAPACK_DISABLE_NAN_CHECK
52  /* Optionally check input matrices for NaNs */
53  if( LAPACKE_dge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
54  return -14;
55  }
56  if( LAPACKE_d_nancheck( n, d, 1 ) ) {
57  return -7;
58  }
59  if( LAPACKE_lsame( fact, 'f' ) ) {
60  if( LAPACKE_d_nancheck( n, df, 1 ) ) {
61  return -10;
62  }
63  }
64  if( LAPACKE_d_nancheck( n-1, dl, 1 ) ) {
65  return -6;
66  }
67  if( LAPACKE_lsame( fact, 'f' ) ) {
68  if( LAPACKE_d_nancheck( n-1, dlf, 1 ) ) {
69  return -9;
70  }
71  }
72  if( LAPACKE_d_nancheck( n-1, du, 1 ) ) {
73  return -8;
74  }
75  if( LAPACKE_lsame( fact, 'f' ) ) {
76  if( LAPACKE_d_nancheck( n-2, du2, 1 ) ) {
77  return -12;
78  }
79  }
80  if( LAPACKE_lsame( fact, 'f' ) ) {
81  if( LAPACKE_d_nancheck( n-1, duf, 1 ) ) {
82  return -11;
83  }
84  }
85 #endif
86  /* Allocate memory for working array(s) */
87  iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
88  if( iwork == NULL ) {
90  goto exit_level_0;
91  }
92  work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
93  if( work == NULL ) {
95  goto exit_level_1;
96  }
97  /* Call middle-level interface */
98  info = LAPACKE_dgtsvx_work( matrix_layout, fact, trans, n, nrhs, dl, d, du,
99  dlf, df, duf, du2, ipiv, b, ldb, x, ldx, rcond,
100  ferr, berr, work, iwork );
101  /* Release memory and exit */
102  LAPACKE_free( work );
103 exit_level_1:
104  LAPACKE_free( iwork );
105 exit_level_0:
106  if( info == LAPACK_WORK_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_dgtsvx", info );
108  }
109  return info;
110 }
lapack_int LAPACKE_dgtsvx_work(int matrix_layout, char fact, char trans, lapack_int n, lapack_int nrhs, const double *dl, const double *d, const double *du, double *dlf, double *df, double *duf, double *du2, lapack_int *ipiv, const double *b, lapack_int ldb, double *x, lapack_int ldx, double *rcond, double *ferr, double *berr, double *work, lapack_int *iwork)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACK_WORK_MEMORY_ERROR
Definition: lapacke.h:122
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define MAX(x, y)
Definition: lapacke_utils.h:47
lapack_logical LAPACKE_dge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const double *a, lapack_int lda)
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
lapack_logical LAPACKE_d_nancheck(lapack_int n, const double *x, lapack_int incx)
lapack_logical LAPACKE_lsame(char ca, char cb)
Definition: lapacke_lsame.c:36
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
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