lapacke_zgbsv_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
00022   CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00023   SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00024   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 zgbsv
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_zgbsv_work( int matrix_order, lapack_int n, lapack_int kl,
00038                                lapack_int ku, lapack_int nrhs,
00039                                lapack_complex_double* ab, lapack_int ldab,
00040                                lapack_int* ipiv, lapack_complex_double* b,
00041                                lapack_int ldb )
00042 {
00043     lapack_int info = 0;
00044     if( matrix_order == LAPACK_COL_MAJOR ) {
00045         /* Call LAPACK function and adjust info */
00046         LAPACK_zgbsv( &n, &kl, &ku, &nrhs, ab, &ldab, ipiv, b, &ldb, &info );
00047         if( info < 0 ) {
00048             info = info - 1;
00049         }
00050     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00051         lapack_int ldab_t = MAX(1,2*kl+ku+1);
00052         lapack_int ldb_t = MAX(1,n);
00053         lapack_complex_double* ab_t = NULL;
00054         lapack_complex_double* b_t = NULL;
00055         /* Check leading dimension(s) */
00056         if( ldab < n ) {
00057             info = -7;
00058             LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
00059             return info;
00060         }
00061         if( ldb < nrhs ) {
00062             info = -10;
00063             LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
00064             return info;
00065         }
00066         /* Allocate memory for temporary array(s) */
00067         ab_t = (lapack_complex_double*)
00068             LAPACKE_malloc( sizeof(lapack_complex_double) * ldab_t * MAX(1,n) );
00069         if( ab_t == NULL ) {
00070             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00071             goto exit_level_0;
00072         }
00073         b_t = (lapack_complex_double*)
00074             LAPACKE_malloc( sizeof(lapack_complex_double) *
00075                             ldb_t * MAX(1,nrhs) );
00076         if( b_t == NULL ) {
00077             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00078             goto exit_level_1;
00079         }
00080         /* Transpose input matrices */
00081         LAPACKE_zgb_trans( matrix_order, n, n, kl, kl+ku, ab, ldab, ab_t,
00082                            ldab_t );
00083         LAPACKE_zge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
00084         /* Call LAPACK function and adjust info */
00085         LAPACK_zgbsv( &n, &kl, &ku, &nrhs, ab_t, &ldab_t, ipiv, b_t, &ldb_t,
00086                       &info );
00087         if( info < 0 ) {
00088             info = info - 1;
00089         }
00090         /* Transpose output matrices */
00091         LAPACKE_zgb_trans( LAPACK_COL_MAJOR, n, n, kl, kl+ku, ab_t, ldab_t, ab,
00092                            ldab );
00093         LAPACKE_zge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
00094         /* Release memory and exit */
00095         LAPACKE_free( b_t );
00096 exit_level_1:
00097         LAPACKE_free( ab_t );
00098 exit_level_0:
00099         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00100             LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
00101         }
00102     } else {
00103         info = -1;
00104         LAPACKE_xerbla( "LAPACKE_zgbsv_work", info );
00105     }
00106     return info;
00107 }


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