Logic for finding the value through formula in c#

Hello All,

Here i have one formula for find out the negative and Positive value. so here we have some condition like below

T_negative = T_0 + (T_Filtertime - 10ms) for T_Filtertime <= 100ms

T_negative = T_0 + (T_Filtertime * 0,9) for T_Filtertime > 100ms

T_negative = T_0 + (T_Filtertime - 5000ms) for T_Filtertime >= 50000ms

T_positive = T_0 + (T_Filtertime + 10ms) + (20ms + 10ms) for T_Filtertime <= 100ms

T_positive = T_0 + (T_Filtertime * 1,1) + (20ms + 10ms) for T_Filtertime > 100ms

T_positive = T_0 + (T_Filtertime + 5000ms) + (20ms + 10ms) for T_Filtertime >= 50000ms

Thanks in Advance

Regards

Hareesh