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2 | mjames | 1 | #ifndef _PP_NARG_H_ |
2 | #define _PP_NARG_H_ |
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3 | |||
4 | #define PP_NARG(...) \ |
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5 | PP_NARG_(__VA_ARGS__,PP_RSEQ_N()) |
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6 | #define PP_NARG_(...) \ |
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7 | PP_ARG_N(__VA_ARGS__) |
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8 | #define PP_ARG_N( \ |
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9 | _1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \ |
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10 | _11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \ |
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11 | _21,_22,_23,_24,_25,_26,_27,_28,_29,_30, \ |
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12 | _31,_32,_33,_34,_35,_36,_37,_38,_39,_40, \ |
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13 | _41,_42,_43,_44,_45,_46,_47,_48,_49,_50, \ |
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14 | _51,_52,_53,_54,_55,_56,_57,_58,_59,_60, \ |
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15 | _61,_62,_63,N,...) N |
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16 | #define PP_RSEQ_N() \ |
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17 | 63,62,61,60, \ |
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18 | 59,58,57,56,55,54,53,52,51,50, \ |
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19 | 49,48,47,46,45,44,43,42,41,40, \ |
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20 | 39,38,37,36,35,34,33,32,31,30, \ |
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21 | 29,28,27,26,25,24,23,22,21,20, \ |
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22 | 19,18,17,16,15,14,13,12,11,10, \ |
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23 | 9,8,7,6,5,4,3,2,1,0 |
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24 | |||
25 | #endif /* _PP_NARG_H_ */ |