1 /*---------------------------------------------------------------------------*
2   Project:  Horizon
3   File:     util_Crc.cpp
4 
5   Copyright (C)2009 Nintendo Co., Ltd.  All rights reserved.
6 
7   These coded instructions, statements, and computer programs contain
8   proprietary information of Nintendo of America Inc. and/or Nintendo
9   Company Ltd., and are protected by Federal copyright law.  They may
10   not be disclosed to third parties or copied or duplicated in any form,
11   in whole or in part, without the prior written consent of Nintendo.
12 
13   $Rev: 29096 $
14  *---------------------------------------------------------------------------*/
15 
16 #ifndef NN_UTIL_UTIL_MISC_H_
17 #define NN_UTIL_UTIL_MISC_H_
18 
19 #include <nn/dbg.h>
20 
21 #ifdef __cplusplus
22 
23 namespace nn { namespace util {
24 
25     // int array[10];
26     // GetArraySize(array) -> 10
27     template <typename T, size_t Num>
GetArraySize(T (& a)[Num])28     size_t GetArraySize(T (&a)[Num])
29     {
30         NN_UNUSED_VAR(a);
31         return Num;
32     }
33 
34     template <size_t V>
35     struct SizeTValue
36     {
37         enum { value = V };
38     };
39 
40     // int array[10];
41     // GetArraySizeT(array).value -> 10
42     template <typename T, size_t Num>
GetArraySizeT(T (& a)[Num])43     const SizeTValue<Num>& GetArraySizeT(T (&a)[Num])
44     {
45         NN_UNUSED_VAR(a);
46         return *reinterpret_cast<SizeTValue<Num>*>(1);
47     }
48 
49     // int array[10];
50     // sizeof(*NumOfElementsT(array)) -> 10
51     template <typename T, size_t Num>
52     char (*NumOfElementsT(T (&a)[Num]))[Num];
53 }}
54 
55 #endif // __cplusplus
56 
57 
58 #endif // ifndef NN_UTIL_UTIL_MISC_H_
59