LAPACK  3.8.0
LAPACK: Linear Algebra PACKage

◆ LAPACKE_ztrrfs_work()

lapack_int LAPACKE_ztrrfs_work ( int  matrix_layout,
char  uplo,
char  trans,
char  diag,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double a,
lapack_int  lda,
const lapack_complex_double b,
lapack_int  ldb,
const lapack_complex_double x,
lapack_int  ldx,
double *  ferr,
double *  berr,
lapack_complex_double work,
double *  rwork 
)

Definition at line 36 of file lapacke_ztrrfs_work.c.

43 {
44  lapack_int info = 0;
45  if( matrix_layout == LAPACK_COL_MAJOR ) {
46  /* Call LAPACK function and adjust info */
47  LAPACK_ztrrfs( &uplo, &trans, &diag, &n, &nrhs, a, &lda, b, &ldb, x,
48  &ldx, ferr, berr, work, rwork, &info );
49  if( info < 0 ) {
50  info = info - 1;
51  }
52  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
53  lapack_int lda_t = MAX(1,n);
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  lapack_complex_double* a_t = NULL;
57  lapack_complex_double* b_t = NULL;
58  lapack_complex_double* x_t = NULL;
59  /* Check leading dimension(s) */
60  if( lda < n ) {
61  info = -8;
62  LAPACKE_xerbla( "LAPACKE_ztrrfs_work", info );
63  return info;
64  }
65  if( ldb < nrhs ) {
66  info = -10;
67  LAPACKE_xerbla( "LAPACKE_ztrrfs_work", info );
68  return info;
69  }
70  if( ldx < nrhs ) {
71  info = -12;
72  LAPACKE_xerbla( "LAPACKE_ztrrfs_work", info );
73  return info;
74  }
75  /* Allocate memory for temporary array(s) */
76  a_t = (lapack_complex_double*)
77  LAPACKE_malloc( sizeof(lapack_complex_double) * lda_t * MAX(1,n) );
78  if( a_t == NULL ) {
80  goto exit_level_0;
81  }
82  b_t = (lapack_complex_double*)
84  ldb_t * MAX(1,nrhs) );
85  if( b_t == NULL ) {
87  goto exit_level_1;
88  }
89  x_t = (lapack_complex_double*)
91  ldx_t * MAX(1,nrhs) );
92  if( x_t == NULL ) {
94  goto exit_level_2;
95  }
96  /* Transpose input matrices */
97  LAPACKE_ztr_trans( matrix_layout, uplo, diag, n, a, lda, a_t, lda_t );
98  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
99  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
100  /* Call LAPACK function and adjust info */
101  LAPACK_ztrrfs( &uplo, &trans, &diag, &n, &nrhs, a_t, &lda_t, b_t,
102  &ldb_t, x_t, &ldx_t, ferr, berr, work, rwork, &info );
103  if( info < 0 ) {
104  info = info - 1;
105  }
106  /* Release memory and exit */
107  LAPACKE_free( x_t );
108 exit_level_2:
109  LAPACKE_free( b_t );
110 exit_level_1:
111  LAPACKE_free( a_t );
112 exit_level_0:
113  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
114  LAPACKE_xerbla( "LAPACKE_ztrrfs_work", info );
115  }
116  } else {
117  info = -1;
118  LAPACKE_xerbla( "LAPACKE_ztrrfs_work", info );
119  }
120  return info;
121 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define LAPACKE_free(p)
Definition: lapacke.h:113
#define lapack_complex_double
Definition: lapacke.h:90
void LAPACKE_ztr_trans(int matrix_layout, char uplo, char diag, lapack_int n, const lapack_complex_double *in, lapack_int ldin, lapack_complex_double *out, lapack_int ldout)
#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
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)
void LAPACK_ztrrfs(char *uplo, char *trans, char *diag, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *a, lapack_int *lda, const lapack_complex_double *b, lapack_int *ldb, const lapack_complex_double *x, lapack_int *ldx, double *ferr, double *berr, lapack_complex_double *work, double *rwork, lapack_int *info)
Here is the call graph for this function:
Here is the caller graph for this function: