原创 自己刚写的一个内存拷贝函数～

/*==================================

          函数：   CopyBuffer
          说明： 从源内存区向目标内存区顺序拷贝一定长度的内存块
          入口：  *SouPointer--源指针
                        *DesPointer--目标指针
                        Length-------拷贝长度
          出口：返回目的区的指针
 
===================================*/

CopyBuffer(void *SouPointer,void *DesPointer,uint16 Length)
{
     uint16 i;
     uint8 *D_Pointer;
     uint8 *S_Pointer;

     if ( (SouPointer==NULL)||(DesPointer==NULL) )
     {
          return;
     }

     if(DesPointer < SouPointer)
     {
          D_Pointer = (uint8 *)DesPointer;
          S_Pointer = (uint8 *)SouPointer;
          for (i = 0; i < Length; i++ )
          {
              *D_Pointer++ = *S_Pointer++ ;
          }
     }
     else
     {
          D_Pointer = ((uint8 *)DesPointer)+(Length - 1);
          S_Pointer = ((uint8 *)SouPointer)+(Length - 1);
          for(i = 0; i < Length; i )
          {
              *D_Pointer-- = *S_Pointer--;
          }
      }
      return DesPointer;
}