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/*!
* \file
* \brief Fast math test program
* \author
*
* -------------------------------------------------------------------------
*
* Copyright (C) 1995-2013 (see AUTHORS file for a list of contributors)
*
* This file is part of IT++ - a C++ library of mathematical, signal
* processing, speech processing, and communications classes and functions.
*
* IT++ is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* IT++ is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along
* with IT++. If not, see <http://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include <itpp/itbase.h>
#include "gtest/gtest.h"
using namespace itpp;
static
void assert_mat_p(const mat &ref, const mat &act, int line)
{
static const double tol = 1e-4;
ASSERT_EQ(ref.rows(), act.rows()) << line;
ASSERT_EQ(ref.cols(), ref.cols()) << line;
for (int n = 0; n < ref.rows(); ++n) {
for (int k = 0; k < ref.cols(); ++k) {
ASSERT_NEAR(ref(n,k), act(n,k), tol) << line;
}
}
}
#define assert_mat(ref, act) assert_mat_p(ref, act, __LINE__)
TEST(FastMath, All)
{
// Test of fastmath
mat m0("1 2 3;4 5 6;7 8 9"), mv0("2;3;1");
vec v0("2 3 1");
// sub_v_vT_m: the slow and fast way
mat act = m0 - mv0*transpose(mv0)*m0;
mat ref = "-41 -52 -63; -59 -76 -93; -14 -19 -24";
assert_mat(ref, act);
sub_v_vT_m(m0, v0);
ref = "-41 -52 -63; -59 -76 -93; -14 -19 -24";
assert_mat(ref, m0);
m0 = "1 2 3;4 5 6;7 8 9";
// sub_m_v_vT: the slow and fast way
act = m0 - m0*mv0*transpose(mv0);
ref = "-21 -31 -8; -54 -82 -23; -87 -133 -38";
assert_mat(ref, act);
sub_m_v_vT(m0, v0);
ref = "-21 -31 -8; -54 -82 -23; -87 -133 -38";
assert_mat(ref, m0);
}
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