lapacke_dgbrfs.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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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 high-level C interface to LAPACK function dgbrfs
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dgbrfs( int matrix_order, char trans, lapack_int n,
00038                            lapack_int kl, lapack_int ku, lapack_int nrhs,
00039                            const double* ab, lapack_int ldab, const double* afb,
00040                            lapack_int ldafb, const lapack_int* ipiv,
00041                            const double* b, lapack_int ldb, double* x,
00042                            lapack_int ldx, double* ferr, double* berr )
00043 {
00044     lapack_int info = 0;
00045     lapack_int* iwork = NULL;
00046     double* work = NULL;
00047     if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) {
00048         LAPACKE_xerbla( "LAPACKE_dgbrfs", -1 );
00049         return -1;
00050     }
00051 #ifndef LAPACK_DISABLE_NAN_CHECK
00052     /* Optionally check input matrices for NaNs */
00053     if( LAPACKE_dgb_nancheck( matrix_order, n, n, kl, ku, ab, ldab ) ) {
00054         return -7;
00055     }
00056     if( LAPACKE_dgb_nancheck( matrix_order, n, n, kl, kl+ku, afb, ldafb ) ) {
00057         return -9;
00058     }
00059     if( LAPACKE_dge_nancheck( matrix_order, n, nrhs, b, ldb ) ) {
00060         return -12;
00061     }
00062     if( LAPACKE_dge_nancheck( matrix_order, n, nrhs, x, ldx ) ) {
00063         return -14;
00064     }
00065 #endif
00066     /* Allocate memory for working array(s) */
00067     iwork = (lapack_int*)LAPACKE_malloc( sizeof(lapack_int) * MAX(1,n) );
00068     if( iwork == NULL ) {
00069         info = LAPACK_WORK_MEMORY_ERROR;
00070         goto exit_level_0;
00071     }
00072     work = (double*)LAPACKE_malloc( sizeof(double) * MAX(1,3*n) );
00073     if( work == NULL ) {
00074         info = LAPACK_WORK_MEMORY_ERROR;
00075         goto exit_level_1;
00076     }
00077     /* Call middle-level interface */
00078     info = LAPACKE_dgbrfs_work( matrix_order, trans, n, kl, ku, nrhs, ab, ldab,
00079                                 afb, ldafb, ipiv, b, ldb, x, ldx, ferr, berr,
00080                                 work, iwork );
00081     /* Release memory and exit */
00082     LAPACKE_free( work );
00083 exit_level_1:
00084     LAPACKE_free( iwork );
00085 exit_level_0:
00086     if( info == LAPACK_WORK_MEMORY_ERROR ) {
00087         LAPACKE_xerbla( "LAPACKE_dgbrfs", info );
00088     }
00089     return info;
00090 }


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