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View the Project on GitHub Luzhiled/comp-geometry
#include <cassert> #include "../det.hpp" int main() { using intgeometry2d::i64; using intgeometry2d::lattice_point; using intgeometry2d::det; using LP64 = lattice_point<i64>; assert(det(LP64(12345, 67890), LP64(3141592, 653589)) == -205'214'124'675ll); }
#line 1 "src/integer-geometry/unit-test/unit-test-det.cpp" #include <cassert> #line 2 "src/integer-geometry/det.hpp" #line 2 "src/integer-geometry/point.hpp" #line 2 "src/integer-geometry/alias.hpp" #include <cstddef> #include <cstdint> namespace intgeometry2d { using isize = std::ptrdiff_t; using usize = std::size_t; using i32 = std::int_fast32_t; using i64 = std::int_fast64_t; using u32 = std::uint_fast32_t; using u64 = std::uint_fast64_t; } // intgeometry2d #line 4 "src/integer-geometry/point.hpp" namespace intgeometry2d { template< typename Z > class lattice_point { Z x_, y_; public: lattice_point() {} lattice_point(Z x_, Z y_) : x_(x_), y_(y_) {} Z x() const { return x_; } Z y() const { return y_; } bool operator==(const lattice_point &p) const { return x_ == p.x_ and y_ == p.y_; } bool operator!=(const lattice_point &p) const { return x_ != p.x_ or y_ != p.y_; } lattice_point operator+(lattice_point p) { return lattice_point(x_ + p.x_, y_ + p.y_); } lattice_point operator-(lattice_point p) { return lattice_point(x_ - p.x_, y_ - p.y_); } Z norm() const { return x_ * x_ + y_ * y_; } }; } // intgeometry2d #line 4 "src/integer-geometry/det.hpp" namespace intgeometry2d { template< typename Z > Z det(const lattice_point<Z> &a, const lattice_point<Z> &b) { return a.x() * b.y() - a.y() * b.x(); } } // intgeometry2d #line 4 "src/integer-geometry/unit-test/unit-test-det.cpp" int main() { using intgeometry2d::i64; using intgeometry2d::lattice_point; using intgeometry2d::det; using LP64 = lattice_point<i64>; assert(det(LP64(12345, 67890), LP64(3141592, 653589)) == -205'214'124'675ll); }