View Compilation Error

0_0_26387089_19801.cpp: In member function 'int SAM::insert(char)':
0_0_26387089_19801.cpp:70:37: error: 'SIGMA_SIZE' was not declared in this scope
                 for (int j = 0; j < SIGMA_SIZE; j++) g[nq][j] = g[q][j];
                                     ^