69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
/**
|
|
* Marlin 3D Printer Firmware
|
|
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#undef MIN
|
|
#undef MAX
|
|
|
|
#ifdef __cplusplus
|
|
|
|
extern "C++" {
|
|
|
|
// C++11 solution that is standards compliant. Return type is deduced automatically
|
|
template <class L, class R> static inline constexpr auto MIN(const L lhs, const R rhs) -> decltype(lhs + rhs) {
|
|
return lhs < rhs ? lhs : rhs;
|
|
}
|
|
template <class L, class R> static inline constexpr auto MAX(const L lhs, const R rhs) -> decltype(lhs + rhs) {
|
|
return lhs > rhs ? lhs : rhs;
|
|
}
|
|
template<class T, class ... Ts> static inline constexpr const T MIN(T V, Ts... Vs) { return MIN(V, MIN(Vs...)); }
|
|
template<class T, class ... Ts> static inline constexpr const T MAX(T V, Ts... Vs) { return MAX(V, MAX(Vs...)); }
|
|
|
|
}
|
|
|
|
#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
|