text/plain
•
660 B
•
37 lines
/*
* Wolkenwelten - Copyright (C) 2020-2021 - Benjamin Vincent Schulenburg
*
* This project uses the MIT license, a copy should be included under /LICENSE
*/
#include "random-number-generator.h"
u64 RNGValue;
void seedRNG(u64 seed){
RNGValue = seed;
}
u64 getRNGSeed(){
return RNGValue;
}
u64 rngValR(){
RNGValue = ((RNGValue * 1103515245)) + 12345;
return ((RNGValue&0xFFFF)<<16) | ((RNGValue>>16)&0xFFFF);
}
float rngValf(){
return (float)rngValR() / ((float)0xffffffff);
}
u64 rngValA(u64 mask){
return rngValR() & mask;
}
u64 rngValM(u64 max){
return rngValR() % max;
}
i64 rngValMM(i64 min,i64 max){
return rngValM(max - min) + min;
}
