[Shooting King]

// This is pawn code (amxmodx plugin)
new var;

1. What is the type and size of var ? Is it a Cell ?

2. What is the exact meaning of casting ? For what purposes are reinterpret cast and static cast are used ? Are there any more types of castings ?

3. In context of the following functions what does FP_STRINGEX (copy back string) mean ?

int MF_RegisterForward( const char *funcname, ForwardExecType exectype, ... );
int MF_RegisterSPForward( AMX *amx, int func, ... );
int MF_RegisterSPForwardByName( AMX *amx, const char *func, ... );

4.

Originally Posted by moduleconfig.h PHP Code: #if !defined PAWN_CELL_SIZE   #define PAWN_CELL_SIZE 32     /* by default, use 32-bit cells */ #endif #if PAWN_CELL_SIZE==16   typedef uint16_t  ucell;   typedef int16_t   cell; #elif PAWN_CELL_SIZE==32   typedef uint32_t  ucell;   typedef int32_t   cell; #define REAL    float #elif PAWN_CELL_SIZE==64   typedef uint64_t  ucell;   typedef int64_t   cell; #define REAL    double #else   #error Unsupported cell size (PAWN_CELL_SIZE) #endif

Does pawn cell size change ? And how is that useful ?

[hzqst]

1."cell" in amxx equal to "int" in c/c++, which means "new var;" = "int var;"
2.there is no need to use static_cast and reinterpret_cast.

[Shooting King]

Originally Posted by hzqst 1."cell" in amxx equal to "int" in c/c++, which means "new var;" = "int var;" 2.there is no need to use static_cast and reinterpret_cast.

1. Size of Cell is 4 Bytes always ?
2. What are their differences and when they are used ?

Thankyou.

[Arkshine]

1. Like you quoted "by default, use 32-bit cells".
2. At this point, you should read some C/C++ tutorial, it will make more sense
3. This means that you can overwrite the content, it's basically an output buffer. If you create a forward to return a string, you can use that to pass string by reference. This forward http://www.amxmodx.org/api/amxmodx/inconsistent_file: last argument content can be changed.
4. The original Pawn version can be used on several system, could be probably useful depending the target environment I guess, but here for AMXX, you should not change, and it won't probably work properly anyway.

[Shooting King]

Originally Posted by Arkshine 1. Like you quoted "by default, use 32-bit cells". 4. The original Pawn version can be used on several system, could be probably useful depending the target environment I guess, but here for AMXX, you should not change, and it won't probably work properly anyway.

So, Amxx uses 32 Bit cells and that doesn't change. This makes sense.

Originally Posted by Arkshine 2. At this point, you should read some C/C++ tutorial, it will make more sense.

Thanks for the info, Arkshine.

[claudiuhks]

dynamic_cast, static_cast, reinterpret_cast, bad_cast, safe_cast and const_cast operators.
Read more at MSDN.
PAWN_CELL_SIZE is currently 32 everywhere so I guess the [#if defined #else #endif] check is useless for now.

[Shooting King]

Originally Posted by claudiuhks dynamic_cast, static_cast, reinterpret_cast, bad_cast, safe_cast and const_cast operators. Read more at MSDN. PAWN_CELL_SIZE is currently 32 everywhere so I guess the [#if defined #else #endif] check is useless for now.

:yay: Direct link. Btw, claudiuhks whats the following casting method called ?

PHP Code:

// C++/C
float a  = (float)97; 


Thanks.

[claudiuhks]

Originally Posted by Shooting King :yay: Direct link. Btw, claudiuhks whats the following casting method called ? PHP Code: // C++/C float a  = (float)97;  Thanks.

I can't answer you as a developer, but as I know, this is how to assign data to variables depending on their type.

PHP Code:

32-bit float A = 97.f; // 97.0f
64-bit double B = 97.0;
32-bit long C = 0L;
32-bit unsigned long D = 0UL;
64-bit long long E = 0LL;
64-bit unsigned long long F = 0ULL;
32-bit int G = 7195; 


Well, regarding float a = (float)97;
I don't think it's a requirement. It would be one, only if the next code is met.

PHP Code:

double K = 12479125.0;
float L = (float)K; // transferring 64-bit data to 32-bit variable. 


And I am still not sure about constants.
Anyways, I am pretty sure you will never assign a 64-bit constant value (very very long number) to a 32-bit variable.

You can read this to get the exact name.

[Shooting King]

Ok. Thanks claudiuhks

[fysiks]

Originally Posted by Shooting King whats the following casting method called ? PHP Code: // C++/C float a  = (float)97;

Isn't that just a cast? Is there more than one type of cast in C/C++?