View Compilation Error

0_0_25549226_1076.cpp: In function 'void Clear()':
0_0_25549226_1076.cpp:43:26: error: 'memste' was not declared in this scope
  memste(LOW,0,sizeof(LOW));
                          ^
0_0_25549226_1076.cpp:45:26: error: 'mmeset' was not declared in this scope
  mmeset(stk,0,sizeof(stk));
                          ^