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/***************************************************************************
* Copyright (c) Johan Mabille, Sylvain Corlay, Wolf Vollprecht and *
* Martin Renou *
* Copyright (c) QuantStack *
* Copyright (c) Serge Guelton *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#include "xsimd/xsimd.hpp"
#ifndef XSIMD_NO_SUPPORTED_ARCHITECTURE
#include "test_utils.hpp"
template <class B>
struct select_test
{
using batch_type = B;
using value_type = typename B::value_type;
using arch_type = typename B::arch_type;
static constexpr size_t size = B::size;
using vector_type = std::vector<value_type>;
size_t nb_input;
vector_type lhs_input;
vector_type rhs_input;
vector_type expected;
vector_type res;
select_test()
{
nb_input = size * 10000;
lhs_input.resize(nb_input);
rhs_input.resize(nb_input);
for (size_t i = 0; i < nb_input; ++i)
{
lhs_input[i] = value_type(i) / 4 + value_type(1.2) * std::sqrt(value_type(i + 0.25));
rhs_input[i] = value_type(10.2) / (i + 2) + value_type(0.25);
}
expected.resize(nb_input);
res.resize(nb_input);
}
void test_select_dynamic()
{
for (size_t i = 0; i < nb_input; ++i)
{
expected[i] = lhs_input[i] > value_type(3) ? lhs_input[i] : rhs_input[i];
}
batch_type lhs_in, rhs_in, out;
for (size_t i = 0; i < nb_input; i += size)
{
detail::load_batch(lhs_in, lhs_input, i);
detail::load_batch(rhs_in, rhs_input, i);
out = xsimd::select(lhs_in > value_type(3), lhs_in, rhs_in);
detail::store_batch(out, res, i);
}
size_t diff = detail::get_nb_diff(res, expected);
CHECK_EQ(diff, 0);
}
struct pattern
{
static constexpr bool get(std::size_t i, std::size_t) { return i % 2; }
};
void test_select_static()
{
constexpr auto mask = xsimd::make_batch_bool_constant<value_type, arch_type, pattern>();
for (size_t i = 0; i < nb_input; ++i)
{
expected[i] = mask.get(i % size) ? lhs_input[i] : rhs_input[i];
}
batch_type lhs_in, rhs_in, out;
for (size_t i = 0; i < nb_input; i += size)
{
detail::load_batch(lhs_in, lhs_input, i);
detail::load_batch(rhs_in, rhs_input, i);
out = xsimd::select(mask, lhs_in, rhs_in);
detail::store_batch(out, res, i);
}
size_t diff = detail::get_nb_diff(res, expected);
CHECK_EQ(diff, 0);
}
};
TEST_CASE_TEMPLATE("[select]", B, BATCH_TYPES)
{
select_test<B> Test;
SUBCASE("select_dynamic") { Test.test_select_dynamic(); }
SUBCASE("select_static") { Test.test_select_static(); }
}
#endif
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