Generate random float between two floats

Question

I know this is a rather simple question, but I\'m just not too good at maths.

I know how to generate a random float between 0 and 1:

float random = ((flo         


        

Answer 1

Suppose, you have MIN_RAND and MAX_RAND defining the ranges, then you can have the following:

const float MIN_RAND = 2.0, MAX_RAND = 6.0;
const float range = MAX_RAND - MIN_RAND;
float random = range * ((((float) rand()) / (float) RAND_MAX)) + MIN_RAND ;

This will provide you the number scaled to your preferred range. MIN_RAND, MAX_RAND can be any value, like say 2.5, 6.6 So, the function could be as:

float RandomFloat(float min, float max) {
    return  (max - min) * ((((float) rand()) / (float) RAND_MAX)) + min ;
}