1 #define Float_0 0. 2 #define Float_1 1f 3 #define Float_p1 .1 4 #define Float_2 2.0 5 #define Float_1000 1e3 6 #define Float_2000 2e+3 7 #define Float_p001 1e-3 8 #define Float_80 10.0*(1<<3) 9