在用于编译时设置的结构中为 NVCC 编译器提供静态断言的最佳方法是什么:
以下主要工作,但有时 NVCC 会产生胡说八道的错误消息,即使它应该编译也不会编译!
template<int A, int B>
struct Settings{
static const int a = A;
static const int b = B;
STATIC_ASSERT(a == 15);
}
typedef Settings<15,5> set1; // Comment this out and it works....
template<int A, int B>
struct Settings2{
static const int a = A;
static const int b = B;
STATIC_ASSERT(a % b == 0);
}
typedef Settings<10,5> set2;
静态断言不起作用,我不知道,但是有一个 CUDA 编译器 BUG,它告诉我当我编译它时会抛出 STATIC_ASSERT(a == 15); 即使它应该编译因为上面的代码是正确的,如果我注释掉(A)然后它突然起作用,我使用基本上取自 Boost 的 Thrust 的 STATIC_ASSERT:
#define JOIN( X, Y ) DO_JOIN( X, Y )
#define DO_JOIN( X, Y ) DO_JOIN2(X,Y)
#define DO_JOIN2( X, Y ) X##Y
namespace staticassert {
// HP aCC cannot deal with missing names for template value parameters
template <bool x> struct STATIC_ASSERTION_FAILURE;
template <> struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
// HP aCC cannot deal with missing names for template value parameters
template<int x> struct static_assert_test{};
};
// XXX nvcc 2.3 can't handle STATIC_ASSERT
#if defined(__CUDACC__) && (CUDA_VERSION > 100)
#error your version number of cuda is not 2 digits!
#endif
#if defined(__CUDACC__) /* && (CUDA_VERSION < 30)*/
#define STATIC_ASSERT( B ) typedef staticassert::static_assert_test<sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >) > JOIN(thrust_static_assert_typedef_, __LINE__)
#define STATIC_ASSERT2(B,COMMENT) STATIC_ASSERT(B)
#else
#define STATIC_ASSERT2(B,COMMENT) \
typedef staticassert::static_assert_test< \
sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >)>\
JOIN(thrust_static_assert_typedef_, JOIN(__LINE__, COMMENT ))
#define STATIC_ASSERT( B ) \
typedef staticassert::static_assert_test<sizeof(staticassert::STATIC_ASSERTION_FAILURE< (bool)( (B) ) >) > JOIN(thrust_static_assert_typedef_, __LINE__)
#endif // NVCC 2.3
有没有人遇到过同样的问题?
感谢您的任何评论!