Objective C中的随机浮点范围？

Question

我正在这样做：

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

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

但我怎么能用浮点数来做呢？

Answer 1

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