View Compilation Error

0_0_36568844_25205.cpp: In function 'll llabs(ll)':
0_0_36568844_25205.cpp:12:4: error: redefinition of 'll llabs(ll)'
 ll llabs(ll x) { return x > 0 ? x : -x; }
    ^
In file included from GCC4.9.2/x86_64-w64-mingw32/include/assert.h:17:0,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/cassert:43,
                 from GCC4.9.2/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/stdc++.h:33,
                 from 0_0_36568844_25205.cpp:1:
GCC4.9.2/x86_64-w64-mingw32/include/stdlib.h:632:52: note: 'long long int llabs(long long int)' previously defined here
   __MINGW_EXTENSION __CRT_INLINE long long __cdecl llabs(long long _j) { return (_j >= 0 ? _j : -_j); }
                                                    ^