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 dgebrd 00030 * Author: Intel Corporation 00031 * Generated October, 2010 00032 *****************************************************************************/ 00033 00034 #include "lapacke.h" 00035 #include "lapacke_utils.h" 00036 00037 lapack_int LAPACKE_dgebrd_work( int matrix_order, lapack_int m, lapack_int n, 00038 double* a, lapack_int lda, double* d, double* e, 00039 double* tauq, double* taup, double* work, 00040 lapack_int lwork ) 00041 { 00042 lapack_int info = 0; 00043 if( matrix_order == LAPACK_COL_MAJOR ) { 00044 /* Call LAPACK function and adjust info */ 00045 LAPACK_dgebrd( &m, &n, a, &lda, d, e, tauq, taup, work, &lwork, &info ); 00046 if( info < 0 ) { 00047 info = info - 1; 00048 } 00049 } else if( matrix_order == LAPACK_ROW_MAJOR ) { 00050 lapack_int lda_t = MAX(1,m); 00051 double* a_t = NULL; 00052 /* Check leading dimension(s) */ 00053 if( lda < n ) { 00054 info = -5; 00055 LAPACKE_xerbla( "LAPACKE_dgebrd_work", info ); 00056 return info; 00057 } 00058 /* Query optimal working array(s) size if requested */ 00059 if( lwork == -1 ) { 00060 LAPACK_dgebrd( &m, &n, a, &lda_t, d, e, tauq, taup, work, &lwork, 00061 &info ); 00062 return (info < 0) ? (info - 1) : info; 00063 } 00064 /* Allocate memory for temporary array(s) */ 00065 a_t = (double*)LAPACKE_malloc( sizeof(double) * lda_t * MAX(1,n) ); 00066 if( a_t == NULL ) { 00067 info = LAPACK_TRANSPOSE_MEMORY_ERROR; 00068 goto exit_level_0; 00069 } 00070 /* Transpose input matrices */ 00071 LAPACKE_dge_trans( matrix_order, m, n, a, lda, a_t, lda_t ); 00072 /* Call LAPACK function and adjust info */ 00073 LAPACK_dgebrd( &m, &n, a_t, &lda_t, d, e, tauq, taup, work, &lwork, 00074 &info ); 00075 if( info < 0 ) { 00076 info = info - 1; 00077 } 00078 /* Transpose output matrices */ 00079 LAPACKE_dge_trans( LAPACK_COL_MAJOR, m, n, a_t, lda_t, a, lda ); 00080 /* Release memory and exit */ 00081 LAPACKE_free( a_t ); 00082 exit_level_0: 00083 if( info == LAPACK_TRANSPOSE_MEMORY_ERROR ) { 00084 LAPACKE_xerbla( "LAPACKE_dgebrd_work", info ); 00085 } 00086 } else { 00087 info = -1; 00088 LAPACKE_xerbla( "LAPACKE_dgebrd_work", info ); 00089 } 00090 return info; 00091 }