LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapack_int LAPACKE_zpprfs_work ( int  matrix_layout,
char  uplo,
lapack_int  n,
lapack_int  nrhs,
const lapack_complex_double *  ap,
const lapack_complex_double *  afp,
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 
)

Definition at line 36 of file lapacke_zpprfs_work.c.

44 {
45  lapack_int info = 0;
46  if( matrix_layout == LAPACK_COL_MAJOR ) {
47  /* Call LAPACK function and adjust info */
48  LAPACK_zpprfs( &uplo, &n, &nrhs, ap, afp, b, &ldb, x, &ldx, ferr, berr,
49  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_double* b_t = NULL;
57  lapack_complex_double* x_t = NULL;
58  lapack_complex_double* ap_t = NULL;
59  lapack_complex_double* afp_t = NULL;
60  /* Check leading dimension(s) */
61  if( ldb < nrhs ) {
62  info = -8;
63  LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
64  return info;
65  }
66  if( ldx < nrhs ) {
67  info = -10;
68  LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
69  return info;
70  }
71  /* Allocate memory for temporary array(s) */
72  b_t = (lapack_complex_double*)
73  LAPACKE_malloc( sizeof(lapack_complex_double) *
74  ldb_t * MAX(1,nrhs) );
75  if( b_t == NULL ) {
76  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
77  goto exit_level_0;
78  }
79  x_t = (lapack_complex_double*)
80  LAPACKE_malloc( sizeof(lapack_complex_double) *
81  ldx_t * MAX(1,nrhs) );
82  if( x_t == NULL ) {
83  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
84  goto exit_level_1;
85  }
86  ap_t = (lapack_complex_double*)
87  LAPACKE_malloc( sizeof(lapack_complex_double) *
88  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
89  if( ap_t == NULL ) {
90  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
91  goto exit_level_2;
92  }
93  afp_t = (lapack_complex_double*)
94  LAPACKE_malloc( sizeof(lapack_complex_double) *
95  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
96  if( afp_t == NULL ) {
97  info = LAPACK_TRANSPOSE_MEMORY_ERROR;
98  goto exit_level_3;
99  }
100  /* Transpose input matrices */
101  LAPACKE_zge_trans( matrix_layout, n, nrhs, b, ldb, b_t, ldb_t );
102  LAPACKE_zge_trans( matrix_layout, n, nrhs, x, ldx, x_t, ldx_t );
103  LAPACKE_zpp_trans( matrix_layout, uplo, n, ap, ap_t );
104  LAPACKE_zpp_trans( matrix_layout, uplo, n, afp, afp_t );
105  /* Call LAPACK function and adjust info */
106  LAPACK_zpprfs( &uplo, &n, &nrhs, ap_t, afp_t, b_t, &ldb_t, x_t, &ldx_t,
107  ferr, berr, work, rwork, &info );
108  if( info < 0 ) {
109  info = info - 1;
110  }
111  /* Transpose output matrices */
112  LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
113  /* Release memory and exit */
114  LAPACKE_free( afp_t );
115 exit_level_3:
116  LAPACKE_free( ap_t );
117 exit_level_2:
118  LAPACKE_free( x_t );
119 exit_level_1:
120  LAPACKE_free( b_t );
121 exit_level_0:
122  if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
123  LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
124  }
125  } else {
126  info = -1;
127  LAPACKE_xerbla( "LAPACKE_zpprfs_work", info );
128  }
129  return info;
130 }
LAPACK_ROW_MAJOR
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
lapack_complex_double
#define lapack_complex_double
Definition: lapacke.h:90
MAX
#define MAX(x, y)
Definition: lapacke_utils.h:47
LAPACKE_free
#define LAPACKE_free(p)
Definition: lapacke.h:113
LAPACKE_malloc
#define LAPACKE_malloc(size)
Definition: lapacke.h:110
LAPACK_COL_MAJOR
#define LAPACK_COL_MAJOR
Definition: lapacke.h:120
LAPACKE_xerbla
void LAPACKE_xerbla(const char *name, lapack_int info)
Definition: lapacke_xerbla.c:37
lapack_int
#define lapack_int
Definition: lapacke.h:47
LAPACK_TRANSPOSE_MEMORY_ERROR
#define LAPACK_TRANSPOSE_MEMORY_ERROR
Definition: lapacke.h:123
LAPACKE_zpp_trans
void LAPACKE_zpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
Definition: lapacke_zpp_trans.c:40
LAPACK_zpprfs
void LAPACK_zpprfs(char *uplo, lapack_int *n, lapack_int *nrhs, const lapack_complex_double *ap, const lapack_complex_double *afp, 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)
LAPACKE_zge_trans
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)
Definition: lapacke_zge_trans.c:40

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