Function Rand

pkg/util/bitarray/bitarray.go:551–560

Rand generates a random bit array of the specified length.

(rng *rand.Rand, bitLen uint)

// Rand generates a random bit array of the specified length.
func Rand(rng *rand.Rand, bitLen uint) BitArray {
	d := MakeZeroBitArray(bitLen)
	for i := range d.words {
		d.words[i] = rng.Uint64()
	}
	if len(d.words) > 0 {
		d.words[len(d.words)-1] <<= (numBitsPerWord - d.lastBitsUsed)
	}
	return d
}

// Next returns the next possible bit array in lexicographic order.
// The backing array of words is shared if possible.