Add Round methods.

math.go

@@ -52,6 +52,16 @@ func NaN32() float32 {
 	return float32(NaN())
 }
 
+// Round rounds to the nearest integer.
+func Round(f float64) float64 {
+	return math.Round(f)
+}
+
+// Round32 rounds to the nearest integer.
+func Round32(f float32) float32 {
+	return float32(math.Round(float64(f)))
+}
+
 // Sq the square root of the value
 func Sq(f float64) float64 {
 	return f * f