LAPACK  3.6.1
LAPACK: Linear Algebra PACKage
lapacke_zpprfs_work.c
Go to the documentation of this file.
1 /*****************************************************************************
2  Copyright (c) 2014, Intel Corp.
3  All rights reserved.
4 
5  Redistribution and use in source and binary forms, with or without
6  modification, are permitted provided that the following conditions are met:
7 
8  * Redistributions of source code must retain the above copyright notice,
9  this list of conditions and the following disclaimer.
10  * Redistributions in binary form must reproduce the above copyright
11  notice, this list of conditions and the following disclaimer in the
12  documentation and/or other materials provided with the distribution.
13  * Neither the name of Intel Corporation nor the names of its contributors
14  may be used to endorse or promote products derived from this software
15  without specific prior written permission.
16 
17  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
21  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
27  THE POSSIBILITY OF SUCH DAMAGE.
28 *****************************************************************************
29 * Contents: Native middle-level C interface to LAPACK function zpprfs
30 * Author: Intel Corporation
31 * Generated November 2015
32 *****************************************************************************/
33 
34 #include "lapacke_utils.h"
35 
36 lapack_int LAPACKE_zpprfs_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_complex_double* b, lapack_int ldb,
42  double* ferr, double* berr,
43  lapack_complex_double* work, double* rwork )
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*)
74  ldb_t * MAX(1,nrhs) );
75  if( b_t == NULL ) {
77  goto exit_level_0;
78  }
79  x_t = (lapack_complex_double*)
81  ldx_t * MAX(1,nrhs) );
82  if( x_t == NULL ) {
84  goto exit_level_1;
85  }
86  ap_t = (lapack_complex_double*)
88  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
89  if( ap_t == NULL ) {
91  goto exit_level_2;
92  }
93  afp_t = (lapack_complex_double*)
95  ( MAX(1,n) * MAX(2,n+1) ) / 2 );
96  if( afp_t == NULL ) {
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 }
#define LAPACK_ROW_MAJOR
Definition: lapacke.h:119
#define lapack_complex_double
Definition: lapacke.h:90
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)
#define MAX(x, y)
Definition: lapacke_utils.h:47
#define LAPACKE_free(p)
Definition: lapacke.h:113
#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_zpp_trans(int matrix_layout, char uplo, lapack_int n, const lapack_complex_double *in, lapack_complex_double *out)
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)
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)