我一直试图弄清楚如何初始化指向 2d 结构数组中的 3d 数组的指针。当我可以像这样声明结构时,它工作正常:
#define ROUSSEAU 300
#define OSSO 500
#define MOJO 9000
typedef struct x_primitive
{
short avg[ROUSSEAU][OSSO][MOJO];
} xprimitive;
但不幸的是,该结构太大而无法声明为全局。所以我必须调用内存(系统上可用的192GB内存:win 7 64位);
typedef struct x_primitive
{
short ***avg;
} xprimitive;
xprimitive **xPmtv, *_xPmtv;
void xallocatePmtvMemory(void)
{
int structureCount = 10;
unsigned __int64 pmtvStructureSize = ROUSSEAU * OSSO * MOJO * sizeof(short);
unsigned __int64 memoryBlockSize = structureCount * pmtvStructureSize;
_xPmtv = (xprimitive *) calloc(structureCount, pmtvStructureSize);
xPmtv = (xprimitive **) calloc(structureCount, sizeof(xprimitive *));
for ( int i = 0; i < structureCount; ++i)
{
unsigned __int64 index = i * pmtvStructureSize;
xPmtv[i] = &_xPmtv[ index ];
// **************** here is the problem ******
xPmtv[i]->avg[ROUSSEAU][OSSO][MOJO] = &_xPmtv[ index + (ROUSSEAU + OSSO + MOJO) ];
}
}
我试图将“avg”变量分配给一块内存,但完全失败了。