View Compilation Error

0_0_22102704_7463.cpp: In member function 'void sa::debug()':
0_0_22102704_7463.cpp:91:49: error: 'prLLf' was not declared in this scope
    prLLf("%d %d %d %d\n",i,sa[i],rk[i],height[i]);
                                                 ^