39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
#ifndef _STDARG_H
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#define _STDARG_H
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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typedef __builtin_va_list va_list;
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#define va_start( ap, last ) __builtin_va_start ( ap, last )
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#define va_arg( ap, type ) __builtin_va_arg ( ap, type )
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#define va_end( ap ) __builtin_va_end ( ap )
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#define va_copy( dest, src ) __builtin_va_copy ( dest, src )
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/**
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* Count number of arguments to a variadic macro
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*
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* This rather neat, non-iterative solution is courtesy of Laurent
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* Deniau.
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*
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*/
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#define _VA_ARG_COUNT( _1, _2, _3, _4, _5, _6, _7, _8, \
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_9, _10, _11, _12, _13, _14, _15, _16, \
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_17, _18, _19, _20, _21, _22, _23, _24, \
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_25, _26, _27, _28, _29, _30, _31, _32, \
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_33, _34, _35, _36, _37, _38, _39, _40, \
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_41, _42, _43, _44, _45, _46, _47, _48, \
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_49, _50, _51, _52, _53, _54, _55, _56, \
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_57, _58, _59, _60, _61, _62, _63, N, ... ) N
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#define VA_ARG_COUNT( ... ) \
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_VA_ARG_COUNT ( __VA_ARGS__, \
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63, 62, 61, 60, 59, 58, 57, 56, \
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55, 54, 53, 52, 51, 50, 49, 48, \
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47, 46, 45, 44, 43, 42, 41, 40, \
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39, 38, 37, 36, 35, 34, 33, 32, \
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31, 30, 29, 28, 27, 26, 25, 24, \
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23, 22, 21, 20, 19, 18, 17, 16, \
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15, 14, 13, 12, 11, 10, 9, 8, \
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7, 6, 5, 4, 3, 2, 1, 0 )
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#endif /* _STDARG_H */
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