diff --git a/utils.go b/utils.go
index 25af8be..f780451 100644
--- a/utils.go
+++ b/utils.go
@@ -112,6 +112,10 @@ func RoundFloat64(x float64) float64 {
 	return math.Floor(x + 0.5)
 }
 
+func FloorFloat64(x float64) float64 {
+	return math.Floor(x)
+}
+
 func AbsInt(x int) int {
 	if x >= 0 {
 		return x