lapacke_cpbsv_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 cpbsv
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_cpbsv_work( int matrix_order, char uplo, lapack_int n,
00038                                lapack_int kd, lapack_int nrhs,
00039                                lapack_complex_float* ab, lapack_int ldab,
00040                                lapack_complex_float* b, lapack_int ldb )
00041 {
00042     lapack_int info = 0;
00043     if( matrix_order == LAPACK_COL_MAJOR ) {
00044         /* Call LAPACK function and adjust info */
00045         LAPACK_cpbsv( &uplo, &n, &kd, &nrhs, ab, &ldab, b, &ldb, &info );
00046         if( info < 0 ) {
00047             info = info - 1;
00048         }
00049     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00050         lapack_int ldab_t = MAX(1,kd+1);
00051         lapack_int ldb_t = MAX(1,n);
00052         lapack_complex_float* ab_t = NULL;
00053         lapack_complex_float* b_t = NULL;
00054         /* Check leading dimension(s) */
00055         if( ldab < n ) {
00056             info = -7;
00057             LAPACKE_xerbla( "LAPACKE_cpbsv_work", info );
00058             return info;
00059         }
00060         if( ldb < nrhs ) {
00061             info = -9;
00062             LAPACKE_xerbla( "LAPACKE_cpbsv_work", info );
00063             return info;
00064         }
00065         /* Allocate memory for temporary array(s) */
00066         ab_t = (lapack_complex_float*)
00067             LAPACKE_malloc( sizeof(lapack_complex_float) * ldab_t * MAX(1,n) );
00068         if( ab_t == NULL ) {
00069             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00070             goto exit_level_0;
00071         }
00072         b_t = (lapack_complex_float*)
00073             LAPACKE_malloc( sizeof(lapack_complex_float) *
00074                             ldb_t * MAX(1,nrhs) );
00075         if( b_t == NULL ) {
00076             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00077             goto exit_level_1;
00078         }
00079         /* Transpose input matrices */
00080         LAPACKE_cpb_trans( matrix_order, uplo, n, kd, ab, ldab, ab_t, ldab_t );
00081         LAPACKE_cge_trans( matrix_order, n, nrhs, b, ldb, b_t, ldb_t );
00082         /* Call LAPACK function and adjust info */
00083         LAPACK_cpbsv( &uplo, &n, &kd, &nrhs, ab_t, &ldab_t, b_t, &ldb_t,
00084                       &info );
00085         if( info < 0 ) {
00086             info = info - 1;
00087         }
00088         /* Transpose output matrices */
00089         LAPACKE_cpb_trans( LAPACK_COL_MAJOR, uplo, n, kd, ab_t, ldab_t, ab,
00090                            ldab );
00091         LAPACKE_cge_trans( LAPACK_COL_MAJOR, n, nrhs, b_t, ldb_t, b, ldb );
00092         /* Release memory and exit */
00093         LAPACKE_free( b_t );
00094 exit_level_1:
00095         LAPACKE_free( ab_t );
00096 exit_level_0:
00097         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00098             LAPACKE_xerbla( "LAPACKE_cpbsv_work", info );
00099         }
00100     } else {
00101         info = -1;
00102         LAPACKE_xerbla( "LAPACKE_cpbsv_work", info );
00103     }
00104     return info;
00105 }


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