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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"
#if !XSIMD_WITH_NEON || XSIMD_WITH_NEON64
template <class CP>
struct bitwise_cast_test
{
static constexpr size_t N = CP::size;
using int32_batch = xsimd::batch<int32_t>;
using int64_batch = xsimd::batch<int64_t>;
using float_batch = xsimd::batch<float>;
using double_batch = xsimd::batch<double>;
using int32_vector = std::vector<int32_t, xsimd::default_allocator<int32_t>>;
using int64_vector = std::vector<int64_t, xsimd::default_allocator<int64_t>>;
using float_vector = std::vector<float, xsimd::default_allocator<float>>;
using double_vector = std::vector<double, xsimd::default_allocator<double>>;
int32_vector ftoi32_res;
int32_vector dtoi32_res;
int64_vector ftoi64_res;
int64_vector dtoi64_res;
float_vector i32tof_res;
float_vector i64tof_res;
float_vector dtof_res;
double_vector i32tod_res;
double_vector i64tod_res;
double_vector ftod_res;
bitwise_cast_test()
: ftoi32_res(2 * N)
, dtoi32_res(2 * N)
, ftoi64_res(N)
, dtoi64_res(N)
, i32tof_res(2 * N)
, i64tof_res(2 * N)
, dtof_res(2 * N)
, i32tod_res(N)
, i64tod_res(N)
, ftod_res(N)
{
{
int32_batch input = i32_input();
bitcast b;
b.i32[0] = input.get(0);
b.i32[1] = input.get(1);
std::fill(i32tof_res.begin(), i32tof_res.end(), b.f[0]);
std::fill(i32tod_res.begin(), i32tod_res.end(), b.d);
}
{
int64_batch input = i64_input();
bitcast b;
b.i64 = input.get(0);
std::fill(i64tod_res.begin(), i64tod_res.end(), b.d);
for (size_t i = 0; i < N; ++i)
{
i64tof_res[2 * i] = b.f[0];
i64tof_res[2 * i + 1] = b.f[1];
}
}
{
float_batch input = f_input();
bitcast b;
b.f[0] = input.get(0);
b.f[1] = input.get(1);
std::fill(ftoi32_res.begin(), ftoi32_res.end(), b.i32[0]);
std::fill(ftoi64_res.begin(), ftoi64_res.end(), b.i64);
std::fill(ftod_res.begin(), ftod_res.end(), b.d);
}
{
double_batch input = d_input();
bitcast b;
b.d = input.get(0);
// std::fill(dtoi32_res.begin(), dtoi32_res.end(), b.i32[0]);
std::fill(dtoi64_res.begin(), dtoi64_res.end(), b.i64);
for (size_t i = 0; i < N; ++i)
{
dtoi32_res[2 * i] = b.i32[0];
dtoi32_res[2 * i + 1] = b.i32[1];
dtof_res[2 * i] = b.f[0];
dtof_res[2 * i + 1] = b.f[1];
}
}
}
void test_to_int32()
{
int32_vector i32vres(int32_batch::size);
{
int32_batch i32bres = xsimd::bitwise_cast<int32_t>(f_input());
i32bres.store_aligned(i32vres.data());
INFO("to_int32(float)");
CHECK_VECTOR_EQ(i32vres, ftoi32_res);
}
{
int32_batch i32bres = xsimd::bitwise_cast<int32_t>(d_input());
i32bres.store_aligned(i32vres.data());
INFO("to_int32(double)");
CHECK_VECTOR_EQ(i32vres, dtoi32_res);
}
}
void test_to_int64()
{
int64_vector i64vres(int64_batch::size);
{
int64_batch i64bres = xsimd::bitwise_cast<int64_t>(f_input());
i64bres.store_aligned(i64vres.data());
INFO("to_int64(float)");
CHECK_VECTOR_EQ(i64vres, ftoi64_res);
}
{
int64_batch i64bres = xsimd::bitwise_cast<int64_t>(d_input());
i64bres.store_aligned(i64vres.data());
INFO("to_int64(double)");
CHECK_VECTOR_EQ(i64vres, dtoi64_res);
}
}
void test_to_float()
{
float_vector fvres(float_batch::size);
{
float_batch fbres = xsimd::bitwise_cast<float>(i32_input());
fbres.store_aligned(fvres.data());
INFO("to_float(int32_t)");
CHECK_VECTOR_EQ(fvres, i32tof_res);
}
{
float_batch fbres = xsimd::bitwise_cast<float>(i64_input());
fbres.store_aligned(fvres.data());
INFO("to_float(int64_t)");
CHECK_VECTOR_EQ(fvres, i64tof_res);
}
{
float_batch fbres = xsimd::bitwise_cast<float>(d_input());
fbres.store_aligned(fvres.data());
INFO("to_float(double)");
CHECK_VECTOR_EQ(fvres, dtof_res);
}
}
void test_to_double()
{
double_vector dvres(double_batch::size);
{
double_batch dbres = xsimd::bitwise_cast<double>(i32_input());
dbres.store_aligned(dvres.data());
INFO("to_double(int32_t)");
CHECK_VECTOR_EQ(dvres, i32tod_res);
}
{
double_batch dbres = xsimd::bitwise_cast<double>(i64_input());
dbres.store_aligned(dvres.data());
INFO("to_double(int64_t)");
CHECK_VECTOR_EQ(dvres, i64tod_res);
}
{
double_batch dbres = xsimd::bitwise_cast<double>(f_input());
dbres.store_aligned(dvres.data());
INFO("to_double(float)");
CHECK_VECTOR_EQ(dvres, ftod_res);
}
}
private:
int32_batch i32_input() const
{
return int32_batch(2);
}
int64_batch i64_input() const
{
return int64_batch(2);
}
float_batch f_input() const
{
return float_batch(3.);
}
double_batch d_input() const
{
return double_batch(2.5e17);
}
union bitcast
{
float f[2];
int32_t i32[2];
int64_t i64;
double d;
};
};
TEST_CASE_TEMPLATE("[bitwise cast]", B, CONVERSION_TYPES)
{
bitwise_cast_test<B> Test;
SUBCASE("to_int32") { Test.test_to_int32(); }
SUBCASE("to_int64") { Test.test_to_int64(); }
SUBCASE("to_float") { Test.test_to_float(); }
SUBCASE("to_double") { Test.test_to_double(); }
}
#endif
#endif
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