lapacke_dpotrf_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 dpotrf
00030 * Author: Intel Corporation
00031 * Generated October, 2010
00032 *****************************************************************************/
00033 
00034 #include "lapacke.h"
00035 #include "lapacke_utils.h"
00036 
00037 lapack_int LAPACKE_dpotrf_work( int matrix_order, char uplo, lapack_int n,
00038                                 double* a, lapack_int lda )
00039 {
00040     lapack_int info = 0;
00041     if( matrix_order == LAPACK_COL_MAJOR ) {
00042         /* Call LAPACK function and adjust info */
00043         LAPACK_dpotrf( &uplo, &n, a, &lda, &info );
00044         if( info < 0 ) {
00045             info = info - 1;
00046         }
00047     } else if( matrix_order == LAPACK_ROW_MAJOR ) {
00048         lapack_int lda_t = MAX(1,n);
00049         double* a_t = NULL;
00050         /* Check leading dimension(s) */
00051         if( lda < n ) {
00052             info = -5;
00053             LAPACKE_xerbla( "LAPACKE_dpotrf_work", info );
00054             return info;
00055         }
00056         /* Allocate memory for temporary array(s) */
00057         a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) );
00058         if( a_t == NULL ) {
00059             info = LAPACK_TRANSPOSE_MEMORY_ERROR;
00060             goto exit_level_0;
00061         }
00062         /* Transpose input matrices */
00063         LAPACKE_dpo_trans( matrix_order, uplo, n, a, lda, a_t, lda_t );
00064         /* Call LAPACK function and adjust info */
00065         LAPACK_dpotrf( &uplo, &n, a_t, &lda_t, &info );
00066         if( info < 0 ) {
00067             info = info - 1;
00068         }
00069         /* Transpose output matrices */
00070         LAPACKE_dpo_trans( LAPACK_COL_MAJOR, uplo, n, a_t, lda_t, a, lda );
00071         /* Release memory and exit */
00072         LAPACKE_free( a_t );
00073 exit_level_0:
00074         if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) {
00075             LAPACKE_xerbla( "LAPACKE_dpotrf_work", info );
00076         }
00077     } else {
00078         info = -1;
00079         LAPACKE_xerbla( "LAPACKE_dpotrf_work", info );
00080     }
00081     return info;
00082 }


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