Settings.h

00001 // This file is part of Eigen, a lightweight C++ template library
00002 // for linear algebra.
00003 //
00004 // Copyright (C) 2008-2010 Gael Guennebaud <gael.guennebaud@inria.fr>
00005 // Copyright (C) 2006-2008 Benoit Jacob <jacob.benoit.1@gmail.com>
00006 //
00007 // This Source Code Form is subject to the terms of the Mozilla
00008 // Public License v. 2.0. If a copy of the MPL was not distributed
00009 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
00010 
00011 
00012 /* All the parameters defined in this file can be specialized in the
00013  * architecture specific files, and/or by the user.
00014  * More to come... */
00015 
00016 #ifndef EIGEN_DEFAULT_SETTINGS_H
00017 #define EIGEN_DEFAULT_SETTINGS_H
00018 
00019 /** Defines the maximal loop size to enable meta unrolling of loops.
00020   * Note that the value here is expressed in Eigen's own notion of "number of FLOPS",
00021   * it does not correspond to the number of iterations or the number of instructions
00022   */
00023 #ifndef EIGEN_UNROLLING_LIMIT
00024 #define EIGEN_UNROLLING_LIMIT 100
00025 #endif
00026 
00027 /** Defines the threshold between a "small" and a "large" matrix.
00028   * This threshold is mainly used to select the proper product implementation.
00029   */
00030 #ifndef EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD
00031 #define EIGEN_CACHEFRIENDLY_PRODUCT_THRESHOLD 8
00032 #endif
00033 
00034 /** Defines the maximal width of the blocks used in the triangular product and solver
00035   * for vectors (level 2 blas xTRMV and xTRSV). The default is 8.
00036   */
00037 #ifndef EIGEN_TUNE_TRIANGULAR_PANEL_WIDTH
00038 #define EIGEN_TUNE_TRIANGULAR_PANEL_WIDTH 8
00039 #endif
00040 
00041 
00042 /** Defines the default number of registers available for that architecture.
00043   * Currently it must be 8 or 16. Other values will fail.
00044   */
00045 #ifndef EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS
00046 #define EIGEN_ARCH_DEFAULT_NUMBER_OF_REGISTERS 8
00047 #endif
00048 
00049 #endif // EIGEN_DEFAULT_SETTINGS_H