added comment

1 files changed, 1 insertions, 1 deletions

diff --git a/diffpriv.go b/diffpriv.go
index fb6d2fc..14919b7 100644
--- a/diffpriv.go
+++ b/diffpriv.go
@@ -25,7 +25,7 @@ func diffpriv(value int, sensitivity, epsilon float64) int {
 // Returns a random value from a laplace
 // distribution with parameters u and b.
 func laplaceDist(u, b float64) float64 {
-	uniform := rnd.Float64()
+	uniform := rnd.Float64() // Random [0.0,1.0)
 	uniform -= 0.5
 	return u - b*sgn(uniform)*math.Log(1-2*math.Abs(uniform))
 }