Code/net/minecraft/world/level/levelgen/BitRandomSource.java

package net.minecraft.world.level.levelgen;

import net.minecraft.util.RandomSource;

public interface BitRandomSource extends RandomSource {
    float FLOAT_MULTIPLIER = 5.9604645E-8F;
    double DOUBLE_MULTIPLIER = 1.110223E-16F;

    int next(int p_188498_);

    @Override
    default int nextInt() {
        return this.next(32);
    }

    @Override
    default int nextInt(int p_188504_) {
        if (p_188504_ <= 0) {
            throw new IllegalArgumentException("Bound must be positive");
        } else if ((p_188504_ & p_188504_ - 1) == 0) {
            return (int)((long)p_188504_ * this.next(31) >> 31);
        } else {
            int i;
            int j;
            do {
                i = this.next(31);
                j = i % p_188504_;
            } while (i - j + (p_188504_ - 1) < 0);

            return j;
        }
    }

    @Override
    default long nextLong() {
        int i = this.next(32);
        int j = this.next(32);
        long k = (long)i << 32;
        return k + j;
    }

    @Override
    default boolean nextBoolean() {
        return this.next(1) != 0;
    }

    @Override
    default float nextFloat() {
        return this.next(24) * 5.9604645E-8F;
    }

    @Override
    default double nextDouble() {
        int i = this.next(26);
        int j = this.next(27);
        long k = ((long)i << 27) + j;
        return k * 1.110223E-16F;
    }
}