vectorwrapper/asm_test/asm_test.cpp

71 lines
1.5 KiB
C++
Raw Normal View History

//#define USE_STD_ARRAY
//#define WITH_VWR
#if defined(WITH_VWR)
# include <vectorwrapper/vectorops.hpp>
#endif
#if defined(USE_STD_ARRAY)
# include <array>
#endif
#include <cstddef>
#include <iostream>
namespace {
#if !defined(USE_STD_ARRAY)
struct MyVecStruct {
float x, y, z;
};
#endif
} //unnamed namespace
#if defined(WITH_VWR)
namespace vwr {
#if defined(USE_STD_ARRAY)
template <> struct VectorWrapperInfo<std::array<float, 3>> {
enum { dimensions = 3 };
typedef float scalar_type;
typedef std::array<float, 3> vector_type;
static scalar_type& get_at (std::size_t idx, vector_type& v) {
return v[idx];
}
};
#else
template <> struct VectorWrapperInfo<MyVecStruct> {
enum { dimensions = 3 };
typedef float scalar_type;
typedef MyVecStruct vector_type;
enum {
offset_x = offsetof(MyVecStruct, x),
offset_y = offsetof(MyVecStruct, y),
offset_z = offsetof(MyVecStruct, z)
};
};
#endif
} //namespace vwr
namespace {
#if defined(USE_STD_ARRAY)
typedef vwr::Vec<std::array<float, 3>, 3> vec3;
#else
typedef vwr::Vec<MyVecStruct, 3> vec3;
#endif
} //unnamed namespace
#endif
int main() {
#if defined(WITH_VWR)
vec3 v;
std::cin >> v.x() >> v.y() >> v.z();
const float sum = v.x() + v.y() + v.z();
#elif defined(USE_STD_ARRAY)
std::array<float, 3> arr;
std::cin >> arr[0] >> arr[1] >> arr[2];
const float sum = arr[0] + arr[1] + arr[2];
#else
MyVecStruct v;
std::cin >> v.x >> v.y >> v.z;
const float sum = v.x + v.y + v.z;
#endif
return static_cast<int>(sum);
}