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compat.h: Upgrade ARRAY_SIZE.

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git-svn-id: https://svn.eduke32.com/eduke32@6078 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
hendricks266 2017-02-25 08:16:01 +00:00
parent d6e820645b
commit e9c8f44a47
1 changed files with 29 additions and 3 deletions
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32
source/build/include/compat.h
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@ -147,9 +147,6 @@
extern void EDUKE32_ASSERT_NAME(__LINE__)(int STATIC_ASSERTION_FAILED[(cond)?1:-1])
#endif
#define ARRAY_SIZE(Ar) (sizeof(Ar)/sizeof((Ar)[0]))
#define ARRAY_SSIZE(Ar) (signed)ARRAY_SIZE(Ar)
#ifdef _MSC_VER
# define longlong(x) x##i64
#else
@ -635,6 +632,35 @@ typedef struct {
EDUKE32_STATIC_ASSERT(sizeof(vec3d_t) == sizeof(double) * 3);
////////// Language tricks that depend on size_t //////////
#if defined _MSC_VER
# define ARRAY_SIZE(arr) _countof(arr)
#elif defined __cplusplus && (__cplusplus >= 201103L || __has_feature(cxx_constexpr))
template <typename T, size_t N>
static FORCE_INLINE constexpr size_t ARRAY_SIZE(T const (&)[N]) noexcept
{
return N;
}
#elif defined __cplusplus
struct bad_arg_to_ARRAY_SIZE
{
class Is_pointer; // incomplete
class Is_array {};
template <typename T>
static Is_pointer check_type(const T*, const T* const*);
static Is_array check_type(const void*, const void*);
};
# define ARRAY_SIZE(arr) ( \
0 * sizeof(reinterpret_cast<const ::bad_arg_to_ARRAY_SIZE*>(arr)) + \
0 * sizeof(::bad_arg_to_ARRAY_SIZE::check_type((arr), &(arr))) + \
sizeof(arr) / sizeof((arr)[0]) )
#else
# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#endif
#define ARRAY_SSIZE(arr) (signed)ARRAY_SIZE(arr)
////////// Memory management //////////
#if !defined NO_ALIGNED_MALLOC