How to round double to nearest whole number and then convert to a float?

Question

I am using java.util.Random to generate a random gaussian. I need to convert this gaussian to a float value. However gaussian is a double, so I need some way to either round then convert it to a float. I need to round to the nearest whole number, rounding up. Here is my question: How?

Answer 1

float b = (float)Math.ceil(a); or float b = (float)Math.round(a);

Depending on whether you meant "round to the nearest whole number" (round) or "round up" (ceil).

Beware of loss of precision in converting a double to a float, but that shouldn't be an issue here.