lapacke_zptrfs_work.c
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00001 /*****************************************************************************
00002   Copyright (c) 2010, Intel Corp.
00003   All rights reserved.
00004 
00005   Redistribution and use in source and binary forms, with or without
00006   modification, are permitted provided that the following conditions are met:
00007 
00008     * Redistributions of source code must retain the above copyright notice,
00009       this list of conditions and the following disclaimer.
00010     * Redistributions in binary form must reproduce the above copyright
00011       notice, this list of conditions and the following disclaimer in the
00012       documentation and/or other materials provided with the distribution.
00013     * Neither the name of Intel Corporation nor the names of its contributors
00014       may be used to endorse or promote products derived from this software
00015       without specific prior written permission.
00016 
00017   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00018   AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020   ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
00021   LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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00023   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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00025   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00026   ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
00027   THE POSSIBILITY OF SUCH DAMAGE.
00028 ******************************************************************************
00029 * Contents: Native middle-level C interface to LAPACK function zptrfs
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_zptrfs_work( int matrix_order, char uplo, lapack_int n,
00038                                 lapack_int nrhs, const double* d,
00039                                 const lapack_complex_double* e,
00040                                 const double* df,
00041                                 const lapack_complex_double* ef,
00042                                 const lapack_complex_double* b, lapack_int ldb,
00043                                 lapack_complex_double* x, lapack_int ldx,
00044                                 double* ferr, double* berr,
00045                                 lapack_complex_double* work, double* rwork )
00046 {
00047     lapack_int info = 0;
00048     if( matrix_order == LAPACK_COL_MAJOR ) {
00049         /* Call LAPACK function and adjust info */
00050         LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b, &ldb, x, &ldx, ferr,
00051                        berr, work, rwork, &info );
00052         if( info < 0 ) {
00053             info = info - 1;
00054         }
00055     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00056         lapack_int ldb_t = MAX(1,n);
00057         lapack_int ldx_t = MAX(1,n);
00058         lapack_complex_double* b_t = NULL;
00059         lapack_complex_double* x_t = NULL;
00060         /* Check leading dimension(s) */
00061         if( ldb < nrhs ) {
00062             info = -10;
00063             LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
00064             return info;
00065         }
00066         if( ldx < nrhs ) {
00067             info = -12;
00068             LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
00069             return info;
00070         }
00071         /* Allocate memory for temporary array(s) */
00072         b_t = (lapack_complex_double*)
00073             LAPACKE_malloc( sizeof(lapack_complex_double) *
00074                             ldb_t * MAX(1,nrhs) );
00075         if( b_t == NULL ) {
00076             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00077             goto exit_level_0;
00078         }
00079         x_t = (lapack_complex_double*)
00080             LAPACKE_malloc( sizeof(lapack_complex_double) *
00081                             ldx_t * MAX(1,nrhs) );
00082         if( x_t == NULL ) {
00083             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00084             goto exit_level_1;
00085         }
00086         /* Transpose input matrices */
00087         LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
00088         LAPACKE_zge_trans( matrix_order, n, nrhs, x, ldx, x_t, ldx_t );
00089         /* Call LAPACK function and adjust info */
00090         LAPACK_zptrfs( &uplo, &n, &nrhs, d, e, df, ef, b_t, &ldb_t, x_t, &ldx_t,
00091                        ferr, berr, work, rwork, &info );
00092         if( info < 0 ) {
00093             info = info - 1;
00094         }
00095         /* Transpose output matrices */
00096         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, x_t, ldx_t, x, ldx );
00097         /* Release memory and exit */
00098         LAPACKE_free( x_t );
00099 exit_level_1:
00100         LAPACKE_free( b_t );
00101 exit_level_0:
00102         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00103             LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
00104         }
00105     } else {
00106         info = -1;
00107         LAPACKE_xerbla( "LAPACKE_zptrfs_work", info );
00108     }
00109     return info;
00110 }


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