src/real-geometry/angle/radian-to-degree.hpp

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Last update: 2023-06-01 02:56:49+09:00
Include: #include "src/real-geometry/angle/radian-to-degree.hpp"

Depends on

src/real-geometry/common/const/pi.hpp
src/real-geometry/common/float-alias.hpp

Code

#pragma once

#include "src/real-geometry/common/const/pi.hpp"

namespace geometry {

  template< typename R >
  R radian_to_degree(R theta) {
    return theta * 180.0 / pi();
  }

}

#line 2 "src/real-geometry/angle/radian-to-degree.hpp"

#line 2 "src/real-geometry/common/const/pi.hpp"

#line 2 "src/real-geometry/common/float-alias.hpp"

namespace geometry {

  using f80 = long double;
  using f64 = double;

}
#line 4 "src/real-geometry/common/const/pi.hpp"

#include <cmath>

namespace geometry {

  static f80 pi() {
    static const f80 PI = acosl(-1); // no need `std::`. (?)
    return PI;
  }

}
#line 4 "src/real-geometry/angle/radian-to-degree.hpp"

namespace geometry {

  template< typename R >
  R radian_to_degree(R theta) {
    return theta * 180.0 / pi();
  }

}