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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 84e7813d76e9
children
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// PR c++/59480

class Matrix;

void rot90 (const Matrix& a, int k = 1) { }
template<typename> void rot90_ (const Matrix& a, int k = 1) { }

class Matrix {
  friend void rot90 (const Matrix&, int);
  template<typename> friend void rot90_ (const Matrix&, int);
};

void rot90 (const Matrix& a, int k);
template<typename> void rot90_ (const Matrix& a, int k);