LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_cptrfs_work()

lapack_int LAPACKE_cptrfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const float *  d,
const lapack_complex_float e,
const float *  df,
const lapack_complex_float ef,
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_cptrfs_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_cptrfs( &uplo, &n, &nrhs, d, e, df, ef, b, &ldb, x, &ldx, ferr,
49  berr, work, rwork, &info );
50  if( info < 0 ) {
51  info = info - 1;
52  }
53  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  lapack_complex_float* b_t = NULL;
57  lapack_complex_float* x_t = NULL;
58  /* Check leading dimension(s) */
59  if( ldb < nrhs ) {
60  info = -10;
61  LAPACKE_xerbla( "LAPACKE_cptrfs_work", info );
62  return info;
63  }
64  if( ldx < nrhs ) {
65  info = -12;
66  LAPACKE_xerbla( "LAPACKE_cptrfs_work", info );
67  return info;
68  }
69  /* Allocate memory for temporary array(s) */
70  b_t = (lapack_complex_float*)
72  ldb_t * MAX(1,nrhs) );
73  if( b_t == NULL ) {
75  goto exit_level_0;
76  }
77  x_t = (lapack_complex_float*)
79  ldx_t * MAX(1,nrhs) );
80  if( x_t == NULL ) {
82  goto exit_level_1;
83  }
84  /* Transpose input matrices */
85  LAPACKE_cge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
86  LAPACKE_cge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
87  /* Call LAPACK function and adjust info */
88  LAPACK_cptrfs( &uplo, &n, &nrhs, d, e, df, ef, b_t, &ldb_t, x_t, &ldx_t,
89  ferr, berr, work, rwork, &info );
90  if( info < 0 ) {
91  info = info - 1;
92  }
93  /* Transpose output matrices */
94  LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
95  /* Release memory and exit */
96  LAPACKE_free( x_t );
97 exit_level_1:
98  LAPACKE_free( b_t );
99 exit_level_0:
100  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
101  LAPACKE_xerbla( "LAPACKE_cptrfs_work", info );
102  }
103  } else {
104  info = -1;
105  LAPACKE_xerbla( "LAPACKE_cptrfs_work", info );
106  }
107  return info;
108 }
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
void LAPACK_cptrfs(char *uplo, lapack_int *n, lapack_int *nrhs, const float *d, const lapack_complex_float *e, const float *df, const lapack_complex_float *ef, 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 LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_float
Definition: lapacke.h:74
#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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