diff --git a/inc/math.h b/inc/math.h
index 2b8255c..6033d4b 100644
--- a/inc/math.h
+++ b/inc/math.h
@@ -229,6 +229,14 @@
 float powf(float b, float x);
 
 
+uint64_t gcd(uint64_t a, uint64_t b);
+
+static inline uint64_t lcm(uint32_t a, uint64_t b)
+{
+	return (a * b) / gcd(a, b);
+}
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/math.c b/src/math.c
index 0c14e30..47f6a77 100644
--- a/src/math.c
+++ b/src/math.c
@@ -231,3 +231,23 @@
 	return exp(x * log(b));
 }
 
+
+
+uint64_t gcd(uint64_t a, uint64_t b)
+{
+    if (a == 0) 
+		return b;
+    
+	if (b == 0) 
+		return a;
+
+    uint64_t r = a % b;
+    while (r) 
+	{
+        a = b;
+        b = r;
+        r = a % b;
+    }
+
+    return b;
+}