View Compilation Error

0_0_29789213_18286.cpp: In function 'int main()':
0_0_29789213_18286.cpp:7:35: error: too many arguments to function 'double fabs(double)'
  {s=(fabs(x1-x2),2)+fabs((y1-y2),2);
                                   ^
In file included from 0_0_29789213_18286.cpp:2:0:
GCC4.9.2/x86_64-w64-mingw32/include/math.h:181:31: note: declared here
   __CRT_INLINE double __cdecl fabs (double x)
                               ^