Function randomFloat64

s2/s2_test.go:126–129

randomFloat64 returns a uniformly distributed value in the range [0,1). Note that the values returned are all multiples of 2**-53, which means that not all possible values in this range are returned.

(r ...*rand.Rand)

// Note that the values returned are all multiples of 2**-53, which means that
// not all possible values in this range are returned.
func randomFloat64(r ...*rand.Rand) float64 {
	const randomFloatBits = 53
	return math.Ldexp(float64(randomBits(randomFloatBits, r...)), -randomFloatBits)
}

// randomUniformInt returns a uniformly distributed integer in the range [0,n).
// NOTE: This is replicated here to stay in sync with how the C++ code generates