int random_range(int lowest_number, int highest_number, DistributionType_t type /*= DISTRO_UNIFORM*/)
{
if(highest_number == lowest_number){
return lowest_number;
}
if(lowest_number > highest_number){
int nTmp = highest_number;
highest_number = lowest_number;
lowest_number = nTmp;
}
int range = highest_number - lowest_number;
if(type == DISTRO_UNIFORM){
int r = rand24b() % (range + 1);
return lowest_number + r;
}
else if(type == DISTRO_NORMAL){
float value = box_muller(0.5, 0.25);
if(value < 0){
value = 0;
}else if(value > 1){
value = 1;
}
return lowest_number + (int)((float)range * value);
}
else{
float r = 1.f - sqrt((1.f*rand24b())/RAND_MAX24);
return lowest_number + (int)((float)range * r);
}
}
int32_t random_range(int32_t lowestNumber, int32_t highestNumber, DistributionType_t type /*= DISTRO_UNIFORM*/)
{
if(highestNumber == lowestNumber)
return lowestNumber;
if(lowestNumber > highestNumber)
std::swap(lowestNumber, highestNumber);
switch(type)
{
case DISTRO_UNIFORM:
return (lowestNumber + ((int32_t)rand24b() % (highestNumber - lowestNumber + 1)));
case DISTRO_NORMAL:
return (lowestNumber + int32_t(float(highestNumber - lowestNumber) * (float)std::min((float)1, std::max((float)0, box_muller(0.5, 0.25)))));
default:
break;
}
const float randMax = 16777216;
return (lowestNumber + int32_t(float(highestNumber - lowestNumber) * float(1.f - sqrt((1.f * rand24b()) / randMax))));
}
