LAPACK  3.10.1
LAPACK: Linear Algebra PACKage

◆ LAPACKE_dporfs_work()

lapack_int LAPACKE_dporfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const double *  a,
lapack_int  lda,
const double *  af,
lapack_int  ldaf,
const double *  b,
lapack_int  ldb,
double *  x,
lapack_int  ldx,
double *  ferr,
double *  berr,
double *  work,
lapack_int iwork 
)

Definition at line 35 of file lapacke_dporfs_work.c.

42 {
43  lapack_int info = 0;
44  if( matrix_layout == LAPACK_COL_MAJOR ) {
45  /* Call LAPACK function and adjust info */
46  LAPACK_dporfs( &uplo, &n, &nrhs, a, &lda, af, &ldaf, b, &ldb, x, &ldx,
47  ferr, berr, work, iwork, &info );
48  if( info < 0 ) {
49  info = info - 1;
50  }
51  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
52  lapack_int lda_t = MAX(1,n);
53  lapack_int ldaf_t = MAX(1,n);
54  lapack_int ldb_t = MAX(1,n);
55  lapack_int ldx_t = MAX(1,n);
56  double* a_t = NULL;
57  double* af_t = NULL;
58  double* b_t = NULL;
59  double* x_t = NULL;
60  /* Check leading dimension(s) */
61  if( lda < n ) {
62  info = -6;
63  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
64  return info;
65  }
66  if( ldaf < n ) {
67  info = -8;
68  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
69  return info;
70  }
71  if( ldb < nrhs ) {
72  info = -10;
73  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
74  return info;
75  }
76  if( ldx < nrhs ) {
77  info = -12;
78  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
79  return info;
80  }
81  /* Allocate memory for temporary array(s) */
82  a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
83  if( a_t == NULL ) {
85  goto exit_level_0;
86  }
87  af_t = (double*)LAPACKE_malloc( sizeof(double) * ldaf_t * MAX(1,n) );
88  if( af_t == NULL ) {
90  goto exit_level_1;
91  }
92  b_t = (double*)LAPACKE_malloc( sizeof(double) * ldb_t * MAX(1,nrhs) );
93  if( b_t == NULL ) {
95  goto exit_level_2;
96  }
97  x_t = (double*)LAPACKE_malloc( sizeof(double) * ldx_t * MAX(1,nrhs) );
98  if( x_t == NULL ) {
100  goto exit_level_3;
101  }
102  /* Transpose input matrices */
103  LAPACKE_dpo_trans( matrix_layout, uplo, n, a, lda, a_t, lda_t );
104  LAPACKE_dpo_trans( matrix_layout, uplo, n, af, ldaf, af_t, ldaf_t );
105  LAPACKE_dge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
106  LAPACKE_dge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
107  /* Call LAPACK function and adjust info */
108  LAPACK_dporfs( &uplo, &n, &nrhs, a_t, &lda_t, af_t, &ldaf_t, b_t,
109  &ldb_t, x_t, &ldx_t, ferr, berr, work, iwork, &info );
110  if( info < 0 ) {
111  info = info - 1;
112  }
113  /* Transpose output matrices */
114  LAPACKE_dge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
115  /* Release memory and exit */
116  LAPACKE_free( x_t );
117 exit_level_3:
118  LAPACKE_free( b_t );
119 exit_level_2:
120  LAPACKE_free( af_t );
121 exit_level_1:
122  LAPACKE_free( a_t );
123 exit_level_0:
124  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
125  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
126  }
127  } else {
128  info = -1;
129  LAPACKE_xerbla( "LAPACKE_dporfs_work", info );
130  }
131  return info;
132 }
#define lapack_int
Definition: lapack.h:83
#define LAPACK_dporfs(...)
Definition: lapack.h:12809
#define LAPACK_COL_MAJOR
Definition: lapacke.h:53
#define LAPACKE_free(p)
Definition: lapacke.h:46
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:52
#define LAPACKE_malloc(size)
Definition: lapacke.h:43
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:56
void LAPACKE_xerbla(const char *name, lapack_int info)
#define MAX(x, y)
Definition: lapacke_utils.h:46
void LAPACKE_dge_trans(int matrix_layout, lapack_int m, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
void LAPACKE_dpo_trans(int matrix_layout, char uplo, lapack_int n, const double *in, lapack_int ldin, double *out, lapack_int ldout)
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