目標C中的隨機浮點範圍？

Question

一個在我這樣做：

int randomRange(int min, int max) { 
    int range = max - min; 
    if (range == 0) return min; 

    return (arc4random() % range) + min; 
} 

，但我怎麼能做到這一點與浮動？

Answer 1

+(float) randFloatBetween:(float)low and:(float)high 
{ 
    float diff = high - low; 
    return (((float) rand()/RAND_MAX) * diff) + low; 
}