$x^2 (x \in \mathbb{Z})$
(src/geometry/Z2/operation/square.hpp)

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• Last update: 2022-08-22 18:26:45+09:00
• Include: #include "src/geometry/Z2/operation/square.hpp"

square

Z square(Z x)

x を2乗して返す。

オーバーフローに注意。

Required by

• 円と円の交差判定 (src/geometry/Z2/intersect/is-intersect-circle-circle.hpp)
• 点と円の交差判定 (src/geometry/Z2/intersect/is-intersect-point-circle.hpp)
• src/geometry/Z2/operation/ccw.hpp
• $\|v\|^2 (v \in {\mathbb{Z}}^2)$ (normの2乗) (src/geometry/Z2/operation/square-norm.hpp)
• src/geometry/Z2/segment-function/counterbalance-segments.hpp

Verified with

• test/aoj/4011.test.cpp
• test/atcoder/abc259_d.test.cpp

Code

#pragma once

namespace luz::Z2 {

  template < typename Z >
  Z square(const Z x) {
    return x * x;
  }

} // namespace luz::Z2

#line 2 "src/geometry/Z2/operation/square.hpp"

namespace luz::Z2 {

  template < typename Z >
  Z square(const Z x) {
    return x * x;
  }

} // namespace luz::Z2

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