LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_zgtrfs()

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

Definition at line 36 of file lapacke_zgtrfs.c.

48 {
49  lapack_int info = 0;
50  double* rwork = NULL;
51  lapack_complex_double* work = NULL;
52  if( matrix_layout != LAPACK_COL_MAJOR && matrix_layout != LAPACK_ROW_MAJOR ) {
53  LAPACKE_xerbla( "LAPACKE_zgtrfs", -1 );
54  return -1;
55  }
56 #ifndef LAPACK_DISABLE_NAN_CHECK
57  if( LAPACKE_get_nancheck() ) {
58  /* Optionally check input matrices for NaNs */
59  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, b, ldb ) ) {
60  return -13;
61  }
62  if( LAPACKE_z_nancheck( n, d, 1 ) ) {
63  return -6;
64  }
65  if( LAPACKE_z_nancheck( n, df, 1 ) ) {
66  return -9;
67  }
68  if( LAPACKE_z_nancheck( n-1, dl, 1 ) ) {
69  return -5;
70  }
71  if( LAPACKE_z_nancheck( n-1, dlf, 1 ) ) {
72  return -8;
73  }
74  if( LAPACKE_z_nancheck( n-1, du, 1 ) ) {
75  return -7;
76  }
77  if( LAPACKE_z_nancheck( n-2, du2, 1 ) ) {
78  return -11;
79  }
80  if( LAPACKE_z_nancheck( n-1, duf, 1 ) ) {
81  return -10;
82  }
83  if( LAPACKE_zge_nancheck( matrix_layout, n, nrhs, x, ldx ) ) {
84  return -15;
85  }
86  }
87 #endif
88  /* Allocate memory for working array(s) */
89  rwork = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,n) );
90  if( rwork == NULL ) {
92  goto exit_level_0;
93  }
94  work = (lapack_complex_double*)
95  LAPACKE_malloc( sizeof(lapack_complex_double) * MAX(1,2*n) );
96  if( work == NULL ) {
98  goto exit_level_1;
99  }
100  /* Call middle-level interface */
101  info = LAPACKE_zgtrfs_work( matrix_layout, trans, n, nrhs, dl, d, du, dlf,
102  df, duf, du2, ipiv, b, ldb, x, ldx, ferr, berr,
103  work, rwork );
104  /* Release memory and exit */
105  LAPACKE_free( work );
106 exit_level_1:
107  LAPACKE_free( rwork );
108 exit_level_0:
109  if( info == LAPACK_WORK_MEMORY_ERROR ) {
110  LAPACKE_xerbla( "LAPACKE_zgtrfs", info );
111  }
112  return info;
113 }
lapack_logical LAPACKE_z_nancheck(lapack_int n, const lapack_complex_double *x, lapack_int incx)
#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 lapack_complex_double
Definition: lapacke.h:90
lapack_int LAPACKE_zgtrfs_work(int matrix_layout, char trans, lapack_int n, lapack_int nrhs, const lapack_complex_double *dl, const lapack_complex_double *d, const lapack_complex_double *du, const lapack_complex_double *dlf, const lapack_complex_double *df, const lapack_complex_double *duf, const lapack_complex_double *du2, const lapack_int *ipiv, const lapack_complex_double *b, lapack_int ldb, lapack_complex_double *x, lapack_int ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACKE_xerbla(const char *name, lapack_int info)
#define lapack_int
Definition: lapacke.h:47
lapack_logical LAPACKE_zge_nancheck(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_double *a, lapack_int lda)
int LAPACKE_get_nancheck()
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