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 cheev 00030 * Author: Intel Corporation 00031 * Generated October, 2010 00032 *****************************************************************************/ 00033 00034 #include "lapacke.h" 00035 #include "lapacke_utils.h" 00036 00037 lapack_int LAPACKE_cheev( int matrix_order, char jobz, char uplo, lapack_int n, 00038 lapack_complex_float* a, lapack_int lda, float* w ) 00039 { 00040 lapack_int info = 0; 00041 lapack_int lwork = -1; 00042 float* rwork = NULL; 00043 lapack_complex_float* work = NULL; 00044 lapack_complex_float work_query; 00045 if( matrix_order != LAPACK_COL_MAJOR && matrix_order != LAPACK_ROW_MAJOR ) { 00046 LAPACKE_xerbla( "LAPACKE_cheev", -1 ); 00047 return -1; 00048 } 00049 #ifndef LAPACK_DISABLE_NAN_CHECK 00050 /* Optionally check input matrices for NaNs */ 00051 if( LAPACKE_che_nancheck( matrix_order, uplo, n, a, lda ) ) { 00052 return -5; 00053 } 00054 #endif 00055 /* Allocate memory for working array(s) */ 00056 rwork = (float*)LAPACKE_malloc( sizeof(float) * MAX(1,3*n-2) ); 00057 if( rwork == NULL ) { 00058 info = LAPACK_WORK_MEMORY_ERROR; 00059 goto exit_level_0; 00060 } 00061 /* Query optimal working array(s) size */ 00062 info = LAPACKE_cheev_work( matrix_order, jobz, uplo, n, a, lda, w, 00063 &work_query, lwork, rwork ); 00064 if( info != 0 ) { 00065 goto exit_level_1; 00066 } 00067 lwork = LAPACK_C2INT( work_query ); 00068 /* Allocate memory for work arrays */ 00069 work = (lapack_complex_float*) 00070 LAPACKE_malloc( sizeof(lapack_complex_float) * lwork ); 00071 if( work == NULL ) { 00072 info = LAPACK_WORK_MEMORY_ERROR; 00073 goto exit_level_1; 00074 } 00075 /* Call middle-level interface */ 00076 info = LAPACKE_cheev_work( matrix_order, jobz, uplo, n, a, lda, w, work, 00077 lwork, rwork ); 00078 /* Release memory and exit */ 00079 LAPACKE_free( work ); 00080 exit_level_1: 00081 LAPACKE_free( rwork ); 00082 exit_level_0: 00083 if( info == LAPACK_WORK_MEMORY_ERROR ) { 00084 LAPACKE_xerbla( "LAPACKE_cheev", info ); 00085 } 00086 return info; 00087 }