basemac.h

#pragma once
#define MACRO_CHOOSER2(M, count)  M##count
#define MACRO_CHOOSER1(M, count)  MACRO_CHOOSER2(M, count)
#define MACRO_CHOOSER(M, count)   MACRO_CHOOSER1(M, count)


#define MAC_ARGS_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \
					_11, _12, _13, _14, _15, _16, _17, _18, _19, _20, \
					_21, _22, _23, _24, _25, _26, _27, _28, _29, _30, \
					_31, _32, _33, _34, _35, _36, _37, _38, _39, _40, \
					_41, _42, _43, _44, _45, _46, _47, _48, _49, _50, \
					_51, _52, _53, _54, _55, _56, _57, _58, _59, _60, \
					_61, _62, _63, _64, _65, _66, _67, _68, _69, _70, \
					_71, _72, _73, _74, _75, _76, _77, _78, _79, _80, \
					_81, _82, _83, _84, _85, _86, _87, _88, _89, _90, \
					_91, _92, _93, _94, _95, _96, _97, _98, _99, _100, \
					_101, _102, _103, _104, _105, _106, _107, _108, _109, _110, N, ...) N
#define MAC_ARGS(args)  MAC_ARGS_IMPL args
#define MAC_ARGS_COUNT(...)  MAC_ARGS((__VA_ARGS__, 110, 109, 108, 107, 106, 105, 104, 103, 102, 101, \
													100, 99, 98, 97, 96, 95, 94, 93, 92, 91, \
													90, 89, 88, 87, 86, 85, 84, 83, 82, 81, \
													80, 79, 78, 77, 76, 75, 74, 73, 72, 71, \
													70, 69, 68, 67, 66, 65, 64, 63, 62, 61, \
													60, 59, 58, 57, 56, 55, 54, 53, 52, 51, \
													50, 49, 48, 47, 46, 45, 44, 43, 42, 41, \
													40, 39, 38, 37, 36, 35, 34, 33, 32, 31, \
													30, 29, 28, 27, 26, 25, 24, 23, 22, 21, \
													20, 19, 18, 17, 16, 15, 14, 13, 12, 11, \
													10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0))


#define MAC_COMBINE(x, y)  x y
#define MAC_VARGS_INVOKE(MAC_FUNC, ...) MAC_COMBINE(MACRO_CHOOSER(MAC_FUNC, MAC_ARGS_COUNT(__VA_ARGS__)), (__VA_ARGS__))
#define MARCO_EXPAND(...) __VA_ARGS__