Convert value to clamped 0.0-1.0 float

[geran6]

What would be a reliable way to do this? I need to convert RGB components to float values between 0.0 and 1.0 so 0 is 0.0 and 255 is 1.0.

[Disch]

if you know the component is going to be between 0 and 255:

float v = component / 255.0f;

If you're not sure on the actual range and you want to clamp it:

     if(v > 1)  v = 1;
else if(v < 0)  v = 0;