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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
// SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
// SPDX-FileContributor: 2003-22 Bradley M. Bell
// ----------------------------------------------------------------------------
/*
{xrst_begin double_det_lu.cpp}
Double Speed: Determinant Using Lu Factorization
################################################
Specifications
**************
See :ref:`link_det_lu-name` .
Implementation
**************
{xrst_spell_off}
{xrst_code cpp} */
# include <cppad/utility/vector.hpp>
# include <cppad/speed/det_by_lu.hpp>
# include <cppad/speed/uniform_01.hpp>
// Note that CppAD uses global_option["memory"] at the main program level
# include <map>
extern std::map<std::string, bool> global_option;
bool link_det_lu(
size_t size ,
size_t repeat ,
CppAD::vector<double> &matrix ,
CppAD::vector<double> &det )
{
if(global_option["onetape"]||global_option["atomic"]||global_option["optimize"])
return false;
// -----------------------------------------------------
// setup
CppAD::det_by_lu<double> Det(size);
size_t n = size * size; // number of independent variables
// ------------------------------------------------------
while(repeat--)
{ // get the next matrix
CppAD::uniform_01(n, matrix);
// computation of the determinant
det[0] = Det(matrix);
}
return true;
}
/* {xrst_code}
{xrst_spell_on}
{xrst_end double_det_lu.cpp}
*/
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