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feat: hypot support added

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Mateusz Pusz
2022-08-03 12:29:49 +02:00
parent 9aa3fd4d00
commit dd4679459d
2 changed files with 49 additions and 5 deletions
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8
example/glide_computer/include/glide_computer.h
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@@ -157,9 +157,8 @@ public:
using legs = std::vector<leg>;
template<std::ranges::input_range R>
requires std::same_as<std::ranges::range_value_t<R>,
waypoint> explicit task(const R& r) :
waypoints_(std::ranges::begin(r), std::ranges::end(r))
requires std::same_as<std::ranges::range_value_t<R>, waypoint>
explicit task(const R& r) : waypoints_(std::ranges::begin(r), std::ranges::end(r))
{
}
@@ -215,8 +214,7 @@ constexpr height agl(altitude glider_alt, altitude terrain_level) { return glide
inline units::isq::si::length<units::isq::si::kilometre> length_3d(distance dist, height h)
{
// TODO support for hypot(q, q)
return sqrt(pow<2>(dist.common()) + pow<2>(h.common()));
return hypot(dist.common(), h.common());
}
distance glide_distance(const flight_point& pos, const glider& g, const task& t, const safety& s, altitude ground_alt);

46
src/core/include/units/math.h
View File

@@ -301,4 +301,50 @@ template<Quantity To, std::same_as<typename To::dimension> D, typename U, std::s
return ::units::round<typename To::unit>(q);
}
/**
* @brief Computes the square root of the sum of the squares of x and y,
* without undue overflow or underflow at intermediate stages of the computation
*/
template<Quantity Q1, Quantity Q2>
[[nodiscard]] inline std::common_type_t<Q1, Q2> hypot(const Q1& x, const Q2& y) noexcept
requires requires { typename std::common_type_t<Q1, Q2>; } &&
requires(std::common_type_t<Q1, Q2> q) {
pow<2>(x);
pow<2>(y);
sqrt(pow<2>(x) + pow<2>(y));
requires requires { hypot(q.number(), q.number()); } || requires { std::hypot(q.number(), q.number()); };
}
{
using type = std::common_type_t<Q1, Q2>;
type xx = x;
type yy = y;
using std::hypot;
return type(hypot(xx.number(), yy.number()));
}
/**
* @brief Computes the square root of the sum of the squares of x, y, and z,
* without undue overflow or underflow at intermediate stages of the computation
*/
template<Quantity Q1, Quantity Q2, Quantity Q3>
[[nodiscard]] inline std::common_type_t<std::common_type_t<Q1, Q2>, Q3> hypot(const Q1& x, const Q2& y,
const Q3& z) noexcept
requires requires { typename std::common_type_t<std::common_type_t<Q1, Q2>, Q3>; } &&
requires(std::common_type_t<std::common_type_t<Q1, Q2>, Q3> q) {
pow<2>(x);
pow<2>(y);
pow<2>(z);
sqrt(pow<2>(x) + pow<2>(y) + pow<2>(z));
requires requires { hypot(q.number(), q.number(), q.number()); } ||
requires { std::hypot(q.number(), q.number(), q.number()); };
}
{
using type = std::common_type_t<std::common_type_t<Q1, Q2>, Q3>;
type xx = x;
type yy = y;
type zz = z;
using std::hypot;
return type(hypot(xx.number(), yy.number(), zz.number()));
}
} // namespace units