diff --git a/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java b/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
index ef48e47c..df1d5ee1 100644
--- a/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
+++ b/transpiler/src/main/java/org/jsweet/transpiler/extension/RemoveJavaDependenciesAdapter.java
@@ -553,6 +553,7 @@ public class RemoveJavaDependenciesAdapter extends Java2TypeScriptAdapter {
 					print(invocation.getTargetExpression()).print(".owner");
 					return true;
 				}
+				break;
 
 			case "java.lang.reflect.Array":
 				switch (targetMethodName) {
@@ -563,6 +564,16 @@ public class RemoveJavaDependenciesAdapter extends Java2TypeScriptAdapter {
 						return true;
 					}
 				}
+				break;
+
+			case "java.lang.Math":
+				switch (targetMethodName) {
+				case "ulp":
+					printMacroName(targetMethodName);
+					print("((x) => { let buffer = new ArrayBuffer(8); let dataView = new DataView(buffer); dataView.setFloat64(0, x); let first = dataView.getUint32(0); let second = dataView.getUint32(4); let rawExponent = first & 0x7ff00000; if (rawExponent == 0x7ff00000) { dataView.setUint32(0,first & 0x7fffffff); } else if (rawExponent == 0) { dataView.setUint32(4,1); dataView.setUint32(0,0); } else if (rawExponent >= (52 << 20) + 0x00100000) { dataView.setUint32(0,rawExponent - (52 << 20)); dataView.setUint32(4,0); } else if (rawExponent >= (33 << 20)) { dataView.setUint32(0,1 << ((rawExponent - (33 << 20))  >>> 20 )); dataView.setUint32(4,0); } else { dataView.setUint32(4,1 << ((rawExponent - 0x00100000)  >>> 20)); dataView.setUint32(0,0); } return dataView.getFloat64(0); })(")
+							.printArgList(invocation.getArguments()).print(")");
+					return true;
+				}
 			}
 
 			switch (targetMethodName) {
@@ -1077,7 +1088,8 @@ public class RemoveJavaDependenciesAdapter extends Java2TypeScriptAdapter {
 		case "equals":
 			printMacroName(targetMethodName);
 			print("((a1, a2) => { if(a1==null && a2==null) return true; if(a1==null || a2==null) return false; if(a1.length != a2.length) return false; for(let i = 0; i < a1.length; i++) { if(<any>a1[i] != <any>a2[i]) return false; } return true; })(");
-			print(invocation.getTargetExpression(), delegate).print(", ").printArgList(invocation.getArguments()).print(")");
+			print(invocation.getTargetExpression(), delegate).print(", ").printArgList(invocation.getArguments())
+					.print(")");
 			return true;
 		}
 
diff --git a/transpiler/src/test/java/org/jsweet/test/transpiler/CalculusTests.java b/transpiler/src/test/java/org/jsweet/test/transpiler/CalculusTests.java
index ca123316..0e6c31fd 100644
--- a/transpiler/src/test/java/org/jsweet/test/transpiler/CalculusTests.java
+++ b/transpiler/src/test/java/org/jsweet/test/transpiler/CalculusTests.java
@@ -91,6 +91,9 @@ public class CalculusTests extends AbstractTest {
 			Assert.assertEquals(Math.abs(-1) + Math.abs(-1), (int) r.get("2"), 0.00001);
 			Assert.assertEquals(Math.cbrt(2), (double) r.get("3"), 0.00001);
 			Assert.assertEquals(Math.cbrt(2), (double) r.get("4"), 0.00001);
+			Assert.assertEquals(Math.cbrt(2), (double) r.get("4"), 0.00001);
+			Assert.assertTrue(Math.ulp(956.294) == 1.1368683772161603E-13);
+			Assert.assertTrue(Math.ulp(123.1) == 1.4210854715202004E-14);
 		}, getSourceFile(MathApi.class));
 	}
 
diff --git a/transpiler/src/test/java/source/calculus/MathApi.java b/transpiler/src/test/java/source/calculus/MathApi.java
index 71a180f9..90d93b67 100644
--- a/transpiler/src/test/java/source/calculus/MathApi.java
+++ b/transpiler/src/test/java/source/calculus/MathApi.java
@@ -1,19 +1,18 @@
 package source.calculus;
 
-import static jsweet.util.Lang.$export;
-
 import static java.lang.Math.abs;
 import static java.lang.Math.cbrt;
+import static jsweet.util.Lang.$export;
 
 public class MathApi {
 
 	public static void main(String[] args) {
-		
+
 		// with static import and fully qualified name
 		$export("2", java.lang.Math.abs(-1) + abs(-1));
 		$export("3", java.lang.Math.cbrt(2));
 		$export("4", cbrt(2));
-		
+
 		$export("E", Math.E);
 		$export("PI", Math.PI);
 		$export("abs_123", Math.abs(-123));
@@ -23,6 +22,9 @@ public class MathApi {
 		$export("signum_2342", Math.signum(-2342));
 		$export("scalb1_2__2", Math.scalb(1.2, 2));
 		$export("toDegres0_5", Math.toDegrees(0.5));
+
+		assert Math.ulp(956.294) == 1.1368683772161603E-13;
+		assert Math.ulp(123.1) == 1.4210854715202004E-14;
 		
 	}