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 high-level C interface to LAPACK function dggev 00030 * Author: Intel Corporation 00031 * Generated October, 2010 00032 *****************************************************************************/ 00033 00034 #include "lapacke.h" 00035 #include "lapacke_utils.h" 00036 00037 lapack_int LAPACKE_dggev( int matrix_order, char jobvl, char jobvr, 00038 lapack_int n, double* a, lapack_int lda, double* b, 00039 lapack_int ldb, double* alphar, double* alphai, 00040 double* beta, double* vl, lapack_int ldvl, double* vr, 00041 lapack_int ldvr ) 00042 { 00043 lapack_int info = 0; 00044 lapack_int lwork = -1; 00045 double* work = NULL; 00046 double work_query; 00047 if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) { 00048 LAPACKE_xerbla( "LAPACKE_dggev", -1 ); 00049 return -1; 00050 } 00051 #ifndef LAPACK_DISABLE_NAN_CHECK 00052 /* Optionally check input matrices for NaNs */ 00053 if( LAPACKE_dge_nancheck( matrix_order, n, n, a, lda ) ) { 00054 return -5; 00055 } 00056 if( LAPACKE_dge_nancheck( matrix_order, n, n, b, ldb ) ) { 00057 return -7; 00058 } 00059 #endif 00060 /* Query optimal working array(s) size */ 00061 info = LAPACKE_dggev_work( matrix_order, jobvl, jobvr, n, a, lda, b, ldb, 00062 alphar, alphai, beta, vl, ldvl, vr, ldvr, 00063 &work_query, lwork ); 00064 if( info != 0 ) { 00065 goto exit_level_0; 00066 } 00067 lwork = (lapack_int)work_query; 00068 /* Allocate memory for work arrays */ 00069 work = (double*)LAPACKE_malloc( sizeof(double) * lwork ); 00070 if( work == NULL ) { 00071 info = LAPACK_WORK_MEMORY_ERROR; 00072 goto exit_level_0; 00073 } 00074 /* Call middle-level interface */ 00075 info = LAPACKE_dggev_work( matrix_order, jobvl, jobvr, n, a, lda, b, ldb, 00076 alphar, alphai, beta, vl, ldvl, vr, ldvr, work, 00077 lwork ); 00078 /* Release memory and exit */ 00079 LAPACKE_free( work ); 00080 exit_level_0: 00081 if( info == LAPACK_WORK_MEMORY_ERROR ) { 00082 LAPACKE_xerbla( "LAPACKE_dggev", info ); 00083 } 00084 return info; 00085 }