59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
#include "vectorwrapper/vectorops.hpp"
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#include "vectorwrapper/vectorwrapper_simd.hpp"
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#include <gtest/gtest.h>
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#include <memory>
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#include <random>
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namespace vwr {
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typedef std::aligned_storage<sizeof(float) * 3, 16>::type float3_storage;
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template <>
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struct VectorWrapperInfo<float3_storage> {
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enum { dimensions = 3 };
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typedef float scalar_type;
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enum {
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offset_x = 0,
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offset_y = offset_x + sizeof(scalar_type),
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offset_z = offset_y + sizeof(scalar_type)
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};
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};
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} //namespace vwr
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TEST(vwr_speed, speed) {
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std::minstd_rand randgen;
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typedef vwr::simd::Vec<vwr::float3_storage> simd_vec3;
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static_assert(sizeof(simd_vec3) >= sizeof(float) * 3, "SIMD vector too small");
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auto s1 = static_cast<float>(randgen()) / static_cast<float>(randgen.max());
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auto s2 = static_cast<float>(randgen()) / static_cast<float>(randgen.max());
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simd_vec3 v1(s1);
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simd_vec3 v2(s2);
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s1 += s2;
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v1 += v2;
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EXPECT_FLOAT_EQ(s1, v1.x());
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EXPECT_FLOAT_EQ(s1, v1.y());
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EXPECT_FLOAT_EQ(s1, v1.z());
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auto s3 = s1 + s2;
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simd_vec3 v3 = v1 + v2;
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EXPECT_FLOAT_EQ(s3, v3.x());
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EXPECT_FLOAT_EQ(s3, v3.y());
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EXPECT_FLOAT_EQ(s3, v3.z());
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auto s4 = (s3 - s2) * s1;
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simd_vec3 v4 = (v3 - v2) * v1;
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EXPECT_FLOAT_EQ(s4, v4.x());
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EXPECT_FLOAT_EQ(s4, v4.y());
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EXPECT_FLOAT_EQ(s4, v4.z());
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simd_vec3::pack_type zeroeight(0.8f);
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auto s5 = s4 / s1 + 0.8f;
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simd_vec3 v5 = v4 / v1 + zeroeight;
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EXPECT_FLOAT_EQ(s5, v5.x());
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EXPECT_FLOAT_EQ(s5, v5.y());
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EXPECT_FLOAT_EQ(s5, v5.z());
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}
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