LAPACK  3.8.0
LAPACK: Linear Algebra PACKage
lapacke_zhprfs_work.c
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28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zhprfs
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_zhprfs_work( int matrix_layout, char uplo, lapack_int n,
37  lapack_int nrhs,
38  const lapack_complex_double* ap,
39  const lapack_complex_double* afp,
40  const lapack_int* ipiv,
41  const lapack_complex_double* b, lapack_int ldb,
43  double* ferr, double* berr,
44  lapack_complex_double* work, double* rwork )
45 {
46  lapack_int info = 0;
47  if( matrix_layout == LAPACK_COL_MAJOR ) {
48  /* Call LAPACK function and adjust info */
49  LAPACK_zhprfs( &uplo, &n, &nrhs, ap, afp, ipiv, b, &ldb, x, &ldx, ferr,
50  berr, work, rwork, &info );
51  if( info < 0 ) {
52  info = info - 1;
53  }
54  } else if( matrix_layout == LAPACK_ROW_MAJOR ) {
55  lapack_int ldb_t = MAX(1,n);
56  lapack_int ldx_t = MAX(1,n);
57  lapack_complex_double* b_t = NULL;
58  lapack_complex_double* x_t = NULL;
59  lapack_complex_double* ap_t = NULL;
60  lapack_complex_double* afp_t = NULL;
61  /* Check leading dimension(s) */
62  if( ldb < nrhs ) {
63  info = -9;
64  LAPACKE_xerbla( "LAPACKE_zhprfs_work", info );
65  return info;
66  }
67  if( ldx < nrhs ) {
68  info = -11;
69  LAPACKE_xerbla( "LAPACKE_zhprfs_work", info );
70  return info;
71  }
72  /* Allocate memory for temporary array(s) */
73  b_t = (lapack_complex_double*)
75  ldb_t * MAX(1,nrhs) );
76  if( b_t == NULL ) {
78  goto exit_level_0;
79  }
80  x_t = (lapack_complex_double*)
82  ldx_t * MAX(1,nrhs) );
83  if( x_t == NULL ) {
85  goto exit_level_1;
86  }
87  ap_t = (lapack_complex_double*)
89  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
90  if( ap_t == NULL ) {
92  goto exit_level_2;
93  }
94  afp_t = (lapack_complex_double*)
96  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
97  if( afp_t == NULL ) {
99  goto exit_level_3;
100  }
101  /* Transpose input matrices */
102  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
103  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
104  LAPACKE_zhp_trans( matrix_layout, uplo, n, ap, ap_t );
105  LAPACKE_zhp_trans( matrix_layout, uplo, n, afp, afp_t );
106  /* Call LAPACK function and adjust info */
107  LAPACK_zhprfs( &uplo, &n, &nrhs, ap_t, afp_t, ipiv, b_t, &ldb_t, x_t,
108  &ldx_t, ferr, berr, work, rwork, &info );
109  if( info < 0 ) {
110  info = info - 1;
111  }
112  /* Transpose output matrices */
113  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
114  /* Release memory and exit */
115  LAPACKE_free( afp_t );
116 exit_level_3:
117  LAPACKE_free( ap_t );
118 exit_level_2:
119  LAPACKE_free( x_t );
120 exit_level_1:
121  LAPACKE_free( b_t );
122 exit_level_0:
123  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
124  LAPACKE_xerbla( "LAPACKE_zhprfs_work", info );
125  }
126  } else {
127  info = -1;
128  LAPACKE_xerbla( "LAPACKE_zhprfs_work", info );
129  }
130  return info;
131 }
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
void LAPACK_zhprfs(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *ap, const lapack_complex_double *afp, 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, lapack_int *info)
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
void LAPACKE_zhp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
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)
#define lapack_int
Definition: lapacke.h:47
lapack_int LAPACKE_zhprfs_work(int matrix_layout, char uplo, lapack_int n, lapack_int nrhs, const lapack_complex_double *ap, const lapack_complex_double *afp, 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 lapack_complex_double
Definition: lapacke.h:90
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
#define LAPACKE_free(p)
Definition: lapacke.h:113
void LAPACKE_xerbla(const char *name, lapack_int info)