`mp_units::utility::atan`¶

Arc tangent of an uncertain value (result in radians)

Synopsis¶

[[nodiscard]] constexpr uncertain atan(uncertain const& arg)
  requires requires { atan(arg.value()); } || requires { std::atan(arg.value()); };

Note

This function is a hidden friend of uncertain, declared only inside that class: it can be found only through argument-dependent lookup.

Formula: σf = σx / (1 + x²)

Note