diff --git a/mathx/int.go b/mathx/int.go
new file mode 100644
index 0000000..4c1fe63
--- /dev/null
+++ b/mathx/int.go
@@ -0,0 +1,19 @@
+package mathx
+
+// MaxInt returns the larger one of a and b.
+func MaxInt(a, b int) int {
+	if a > b {
+		return a
+	}
+
+	return b
+}
+
+// MinInt returns the smaller one of a and b.
+func MinInt(a, b int) int {
+	if a < b {
+		return a
+	}
+
+	return b
+}