diff --git a/README.md b/README.md
index 984d969..8dc0ecf 100644
--- a/README.md
+++ b/README.md
@@ -14,11 +14,11 @@ The project includes implementations of the following mathematical algorithms:
 | [basic_operations.h](./src/basic_operations.h)                 | Basic operations, including rounding to a specified number of decimal places, nth root calculation, and logarithm calculation in a given base                                                                                                                                                                                                                                                                                                 |
 | [combinatorics.h](./src/combinatorics.h)                       | Combinatorial analysis, including permutation, circular permutation, arrangement, and combination                                                                                                                                                                                                                                                                                                                                             |
 | [factorial.h](./src/factorial.h)                               | Factorial calculation                                                                                                                                                                                                                                                                                                                                                                                                                         |
-| [gcd.h](./src/gcd.h)                                           | Least common multiple calculation                                                                                                                                                                                                                                                                                                                                                                                                             |
+| [gcd.h](./src/gcd.h)                                           | Greatest common divisor calculation                                                                                                                                                                                                                                                                                                                                                                                                             |
 | [geometry.h](./src/geometry.h)                                 | Geometry-related functions, such as conversion between degrees and radians, distance between two points, midpoint between two points, slope of a line, angle of incline of a line, equation of a line, distance between a point and a line, circle perimeter calculation, number of diagonals in a polygon, sum of internal angles of a convex polygon, each internal angle of a regular polygon, and each external angle of a convex polygon |
 | [growth.h](./src/growth.h)                                     | Growth calculations, including value after simple growth, rate of simple growth, value after compound growth, and rate of compound growth                                                                                                                                                                                                                                                                                                     |
 | [happy_numbers.h](./src/happy_numbers.h)                       | Happy numbers determination                                                                                                                                                                                                                                                                                                                                                                                                                   |
-| [lcm.h](./src/lcm.h)                                           | Greatest common divisor calculation                                                                                                                                                                                                                                                                                                                                                                                                           |
+| [lcm.h](./src/lcm.h)                                           | Least common multiple calculation                                                                                                                                                                                                                                                                                                                                                                                                           |
 | [percentage.h](./src/percentage.h)                             | Percentage calculations, such as finding x percent of a number and determining what percentage one number represents of another                                                                                                                                                                                                                                                                                                               |
 | [perfect_numbers.h](./src/perfect_numbers.h)                   | Perfect numbers determination                                                                                                                                                                                                                                                                                                                                                                                                                 |
 | [prime_factorization.h](./src/prime_factorization.h)           | Prime factorization of numbers                                                                                                                                                                                                                                                                                                                                                                                                                |
diff --git a/src/lcm.h b/src/lcm.h
index ced2837..6bd8e7b 100644
--- a/src/lcm.h
+++ b/src/lcm.h
@@ -2,7 +2,7 @@
 #define LCM_H
 
 #include <errno.h>
-#include <math.h>
+#include <stdlib.h>
 #include "gcd.h"
 
 /**
@@ -18,8 +18,8 @@ long long lcm(int x, int y)
 {
   if (x == 0 || y == 0)
     return 0;
-  long long result;
-  result = abs(x * y / gcd(x, y));
+  long long product = (long long) x * (long long) y;
+  long long result = llabs(product / gcd(x, y));
   return result;
 }