結局、私は次のことをしました(最大10個の引数):
#define Fn1(A,B) A(x1)
#define Df1(A,B) A(B x1)
#define Fn2(A,B,C) A(x1, x2)
#define Df2(A,B,C) A(B x1, C x2)
#define Fn3(A,B,C,D) A(x1, x2, x3)
#define Df3(A,B,C,D) A(B x1, C x2, D x3)
#define Fn4(A,B,C,D,E) A(x1, x2, x3, x4)
#define Df4(A,B,C,D,E) A(B x1, C x2, D x3, E x4)
#define Fn5(A,B,C,D,E,F) A(x1, x2, x3, x4, x5)
#define Df5(A,B,C,D,E,F) A(B x1, C x2, D x3, E x4, F x5)
#define Fn6(A,B,C,D,E,F,G) A(x1, x2, x3, x4, x5, x6)
#define Df6(A,B,C,D,E,F,G) A(B x1, C x2, D x3, E x4, F x5, G x6)
#define Fn7(A,B,C,D,E,F,G,H) A(x1, x2, x3, x4, x5, x6, x7)
#define Df7(A,B,C,D,E,F,G,H) A(B x1, C x2, D x3, E x4, F x5, G x6, H x7)
#define Fn8(A,B,C,D,E,F,G,H,I) A(x1, x2, x3, x4, x5, x6, x7, x8)
#define Df8(A,B,C,D,E,F,G,H,I) A(B x1, C x2, D x3, E x4, F x5, G x6, H x7, I x8)
#define Fn9(A,B,C,D,E,F,G,H,I,J) A(x1, x2, x3, x4, x5, x6, x7, x8, x9)
#define Df9(A,B,C,D,E,F,G,H,I,J) A(B x1, C x2, D x3, E x4, F x5, G x6, H x7, I x8, J x9)
#define Fn10(A,B,C,D,E,F,G,H,I,J,K) A(x1, x2, x3, x4, x5, x6, x7, x8, x9, x10)
#define Df10(A,B,C,D,E,F,G,H,I,J,K) A(B x1, C x2, D x3, E x4, F x5, G x6, H x7, I x8, J x9, K x10)
#define DEF(N, ...) int Df ## N(__VA_ARGS__)
#define CONCAT(A, B) A ## B
#define FN(N, ...) Fn ## N(__VA_ARGS__)
#define DF(N, ...) Df ## N(__VA_ARGS__)
#define XFUNC(T, X) CONCAT(T, X)
#define FUNC(T, ...) XFUNC(T, FN(__VA_ARGS__))
#define DFUNC(T,...) EXTERN int XFUNC(T, DF(__VA_ARGS__))
#ifdef WRAPPER_C
// even when using cuda in case of fail CUDA init use CPU
static int Only_CPU =
#ifdef CUDA_FOUND
0
#else
1
#endif
;
#ifdef CUDA_FOUND
#define SET_F(...) DEF(__VA_ARGS__){ \
if(!Only_CPU) if(FUNC(CU, __VA_ARGS__)) return 1; \
if(FUNC(CPU, __VA_ARGS__)) return 1; \
return 0; \
}
#else
#define SET_F(...) DEF(__VA_ARGS__){ \
if(FUNC(CPU, __VA_ARGS__)) return 1; \
return 0; \
}
#endif // CUDA_FOUND
#else
#define SET_F(...)
#endif // WRAPPER_C
#ifdef CPU_C // file included from CPU.c
#define BOTH(...) DFUNC(CPU, __VA_ARGS__);
//#pragma message "CPUC"
#elif defined CUDA_CU //file included from CUDA.cu
#define BOTH(...) DFUNC(CU, __VA_ARGS__);
#elif defined WRAPPER_C // wrapper.c needs names of both wariants
#ifndef CUDA_FOUND
#define BOTH(...) DFUNC(CPU, __VA_ARGS__);
#else
#define BOTH(...) DFUNC(CU, __VA_ARGS__); DFUNC(CPU, __VA_ARGS__);
#endif // CUDA_FOUND
#else // file included from something else - just define a function
#define BOTH(...) DFUNC(, __VA_ARGS__);
#endif
#define DFN(...) BOTH(__VA_ARGS__) SET_F(__VA_ARGS__)
このコードはファイル wrapper.h にあります。wrapper.c はコードの共通部分のみで構成されています。
関数を定義するには、wrapper.h に次のように記述します。
DFN(2, fillrandarr, size_t, float *)
DFN(6, bicubic_interp, float *, float *, size_t, size_t, size_t, size_t)