diff --git a/mpir.net/mpir.net-tests/HugeFloatTests/Conversions.cs b/mpir.net/mpir.net-tests/HugeFloatTests/Conversions.cs
index b1ea338e..fff89e65 100644
--- a/mpir.net/mpir.net-tests/HugeFloatTests/Conversions.cs
+++ b/mpir.net/mpir.net-tests/HugeFloatTests/Conversions.cs
@@ -358,5 +358,16 @@ namespace MPIR.Tests.HugeFloatTests
                 Assert.IsFalse(b.FitsUshort());
             }
         }
+
+        [TestMethod]
+        public void FloatIsInteger()
+        {
+            using (var a = new HugeFloat("-233454059287409285742345.125"))
+            {
+                Assert.IsFalse(a.IsInteger());
+                a.Value = a * 8;
+                Assert.IsTrue(a.IsInteger());
+            }
+        }
     }
 }
diff --git a/mpir.net/mpir.net/HugeFloat.h b/mpir.net/mpir.net/HugeFloat.h
index 0611a009..994cab1d 100644
--- a/mpir.net/mpir.net/HugeFloat.h
+++ b/mpir.net/mpir.net/HugeFloat.h
@@ -1223,6 +1223,12 @@ namespace MPIR
             /// <returns>true if the value will fit in a short</returns>
             bool FitsUshort() { return MP(fits_ushort_p)(_value) != 0; }
 
+            /// <summary>
+            /// Returns true if the source number is a whole integer.
+            /// </summary>
+            /// <returns>true if the value is an integer</returns>
+            bool IsInteger() { return MP(integer_p)(_value) != 0; }
+
             #pragma endregion
 
             #pragma region IO