/** * Marlin 3D Printer Firmware * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] * * Based on Sprinter and grbl. * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . * */ #undef MIN #undef MAX #ifdef __cplusplus #ifndef _MINMAX_H_ #define _MINMAX_H_ extern "C++" { // C++11 solution that is standards compliant. Return type is deduced automatically template static inline constexpr auto MIN(const L lhs, const R rhs) -> decltype(lhs + rhs) { return lhs < rhs ? lhs : rhs; } template static inline constexpr auto MAX(const L lhs, const R rhs) -> decltype(lhs + rhs) { return lhs > rhs ? lhs : rhs; } template static inline constexpr const T MIN(T V, Ts... Vs) { return MIN(V, MIN(Vs...)); } template static inline constexpr const T MAX(T V, Ts... Vs) { return MAX(V, MAX(Vs...)); } } #endif #else // NUM_ARGS(...) evaluates to the number of arguments #define _NUM_ARGS(X,X6,X5,X4,X3,X2,X1,N,...) N #define NUM_ARGS(...) _NUM_ARGS(0, __VA_ARGS__ ,6,5,4,3,2,1,0) #define MIN_2(a,b) ({__typeof__(a) _a = (a); __typeof__(b) _b = (b); _a < _b ? _a : _b;}) #define MIN_3(a,...) MIN_2(a,MIN_2(__VA_ARGS__)) #define MIN_4(a,...) MIN_2(a,MIN_3(__VA_ARGS__)) #define MIN_5(a,...) MIN_2(a,MIN_4(__VA_ARGS__)) #define MIN_6(a,...) MIN_2(a,MIN_5(__VA_ARGS__)) #define __MIN_N(N, ...) MIN_ ## N(__VA_ARGS__) #define _MIN_N(N, ...) __MIN_N(N, __VA_ARGS__) #define MIN(...) _MIN_N(NUM_ARGS(__VA_ARGS__), __VA_ARGS__) #define MAX_2(a,b) ({__typeof__(a) _a = (a); __typeof__(b) _b = (b); _a > _b ? _a : _b;}) #define MAX_3(a,...) MAX_2(a,MAX_2(__VA_ARGS__)) #define MAX_4(a,...) MAX_2(a,MAX_3(__VA_ARGS__)) #define MAX_5(a,...) MAX_2(a,MAX_4(__VA_ARGS__)) #define MAX_6(a,...) MAX_2(a,MAX_5(__VA_ARGS__)) #define __MAX_N(N, ...) MAX_ ## N(__VA_ARGS__) #define _MAX_N(N, ...) __MAX_N(N, __VA_ARGS__) #define MAX(...) _MAX_N(NUM_ARGS(__VA_ARGS__), __VA_ARGS__) #endif