Feature/math util (#22)

Development supports the math package

mathUtil/ceil_test.go

@@ -0,0 +1,23 @@
+package mathUtil
+
+import (
+	"testing"
+)
+
+func TestCeilFloat32(t *testing.T) {
+	var input float32 = -12.4
+	var expected int = -12
+	res := Ceil(input)
+	if res != expected {
+		t.Errorf("ceil error")
+	}
+}
+
+func TestCeilFloat64(t *testing.T) {
+	var input float64 = 12.4
+	var expected int = 13
+	res := Ceil(input)
+	if res != expected {
+		t.Errorf("ceil error")
+	}
+}