LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cgtrfs_work()

lapack_int LAPACKE_cgtrfs_work ( int  matrix_layout,
char  trans,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_float dl,
const lapack_complex_float d,
const lapack_complex_float du,
const lapack_complex_float dlf,
const lapack_complex_float df,
const lapack_complex_float duf,
const lapack_complex_float du2,
const lapack_int ipiv,
const lapack_complex_float b,
lapack_int  ldb,
lapack_complex_float x,
lapack_int  ldx,
float *  ferr,
float *  berr,
lapack_complex_float work,
float *  rwork 
)

Definition at line 36 of file lapacke_cgtrfs_work.c.

49 {
50  lapack_int info = 0;
51  if( matrix_layout == LAPACK_COL_MAJOR ) {
52  /* Call LAPACK function and adjust info */
53  LAPACK_cgtrfs( &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2, ipiv, b,
54  &ldb, x, &ldx, ferr, berr, work, rwork, &info );
55  if( info < 0 ) {
56  info = info - 1;
57  }
58  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
59  lapack_int ldb_t = MAX(1,n);
60  lapack_int ldx_t = MAX(1,n);
61  lapack_complex_float* b_t = NULL;
62  lapack_complex_float* x_t = NULL;
63  /* Check leading dimension(s) */
64  if( ldb < nrhs ) {
65  info = -14;
66  LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
67  return info;
68  }
69  if( ldx < nrhs ) {
70  info = -16;
71  LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
72  return info;
73  }
74  /* Allocate memory for temporary array(s) */
75  b_t = (lapack_complex_float*)
77  ldb_t * MAX(1,nrhs) );
78  if( b_t == NULL ) {
80  goto exit_level_0;
81  }
82  x_t = (lapack_complex_float*)
84  ldx_t * MAX(1,nrhs) );
85  if( x_t == NULL ) {
87  goto exit_level_1;
88  }
89  /* Transpose input matrices */
90  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
91  LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
92  /* Call LAPACK function and adjust info */
93  LAPACK_cgtrfs( &trans, &n, &nrhs, dl, d, du, dlf, df, duf, du2, ipiv,
94  b_t, &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork,
95  &info );
96  if( info < 0 ) {
97  info = info - 1;
98  }
99  /* Transpose output matrices */
100  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
101  /* Release memory and exit */
102  LAPACKE_free( x_t );
103 exit_level_1:
104  LAPACKE_free( b_t );
105 exit_level_0:
106  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
107  LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
108  }
109  } else {
110  info = -1;
111  LAPACKE_xerbla( "LAPACKE_cgtrfs_work", info );
112  }
113  return info;
114 }
void LAPACKE_cge_trans(int matrix_layout, lapack_int m, lapack_int n, const lapack_complex_float *in, lapack_int ldin, lapack_complex_float *out, lapack_int ldout)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
void LAPACK_cgtrfs(char *trans, lapack_int *n, lapack_int *nrhs, const lapack_complex_float *dl, const lapack_complex_float *d, const lapack_complex_float *du, const lapack_complex_float *dlf, const lapack_complex_float *df, const lapack_complex_float *duf, const lapack_complex_float *du2, const lapack_int *ipiv, const lapack_complex_float *b, lapack_int *ldb, lapack_complex_float *x, lapack_int *ldx, float *ferr, float *berr, lapack_complex_float *work, float *rwork, lapack_int *info)
#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
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
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