#pragma once #include "macros.hpp" #include <cmath> #include <type_traits> namespace util_detail { template<typename n> inline auto clamp_float(n val, n min_, n max_) { return std::fmin(std::fmax(val, min_), max_); } template<typename t, typename n> struct clamp final { static inline auto clamp_(const n& val, const n& min_, const n& max_) { if (unlikely(val > max_)) return max_; if (unlikely(val < min_)) return min_; return val; } }; template<typename t> struct clamp<float, t> { static inline auto clamp_(float val, float min_, float max_) { return clamp_float(val, min_, max_); } }; template<typename t> struct clamp<double, t> { static inline auto clamp_(double val, double min_, double max_) { return clamp_float(val, min_, max_); } }; } // ns util_detail template<typename t, typename u, typename w> inline auto clamp(const t& val, const u& min, const w& max) { using tp = decltype(val + min + max); return ::util_detail::clamp<std::decay_t<tp>, tp>::clamp_(val, min, max); } template<typename t> inline int iround(const t& val) { return int(std::round(val)); } template<typename t> inline unsigned uround(const t& val) { return std::round(std::fmax(t(0), val)); } #include "macros.hpp" template <typename T> static force_inline constexpr auto signum(T x) { return x < T(0) ? -1 : 1; }