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#ifndef NARG_H
#define NARG_H
/* A common problem when writting comfortable interfaces is that you want variable arguments,
but without the baggage.
Passing a terminator or the argument count is error prone.
This is a convenience header exactly for that.
The idea is that you define your function to take the argument count:
`_my_comfy_interface(int n, ...)`
Then you wrap it with our macro magick:
`#define my_comfy_interface _my_comfy_interface(NARG(__VA_ARGS__), __VA_ARGS__)`
And it just werks™.
*/
#define NARG(...) \
PP_NARG_(__VA_ARGS__,PP_RSEQ_N())
#define PP_NARG_(...) \
PP_128TH_ARG(__VA_ARGS__)
#define PP_128TH_ARG( \
_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,_111,_112, \
_113,_114,_115,_116,_117,_118,_119,_120, \
_121,_122,_123,_124,_125,_126,_127, N, ... \
) N
#define PP_RSEQ_N() \
127,126,125,124,123,122,121,120, \
119,118,117,116,115,114,113,112, \
111,110,109,108,107,106,105,104, \
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
#endif
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