15#define MODEL_SHORTPATH 0
16#define MODEL_CIRCUIT 1
36#if !defined(__CYGWIN__) && defined(__GNUC__) && !defined(__MINGW32__)
37#define INTERNAL __attribute__((visibility("hidden")))
INTERNAL int lu_decompose(double **a, int n)
INTERNAL void lu_solve(double *x, double *b, int n)
finds and smooths shortest paths