Fixed bug with values around the minimum subnormal value becoming 0

Author: Synt4xErr0r4

pom.xml

@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>at.syntaxerror</groupId>
   <artifactId>ieee754-java</artifactId>
-  <version>2.1.0</version>
+  <version>2.1.1</version>
   <name>IEEE754-Java</name>
   <description>A Java 19 library for converting between IEEE 754 binary and decimal and BigDecimal</description>
   <licenses>
@@ -64,7 +64,7 @@
 						<path>
 							<groupId>org.projectlombok</groupId>
 							<artifactId>lombok</artifactId>
-							<version>1.18.20</version>
+							<version>1.18.30</version>
 						</path>
 					</annotationProcessorPaths>
 				</configuration>
@@ -111,15 +111,15 @@
     <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
-        <version>1.18.24</version>
+        <version>1.18.30</version>
         <scope>provided</scope>
     </dependency>
 
     <!-- for BigDecimal logarithm -->
     <dependency>
         <groupId>ch.obermuhlner</groupId>
         <artifactId>big-math</artifactId>
-        <version>2.3.0</version>
+        <version>2.3.2</version>
     </dependency>
 
     <!-- JUnit 5 -->

src/main/java/at/syntaxerror/ieee754/binary/BinaryCodec.java

@@ -270,10 +270,14 @@ else if(bitCount == 0)
 			int bits = significand.bitLength();
 
 			significand = significand.add(BigInteger.ONE);
+			
+			int newBits = significand.bitLength();
 
-			if(bits != significand.bitLength()) { // overflow occured, adjust exponent
+			if(bits < newBits) { // overflow occured, adjust exponent
+				
+				if(newBits > this.significand + off)
+					significand = significand.clearBit(newBits - 1); // clear overflown bit
 
-				significand = significand.clearBit(bits); // clear overflown bit					
 				++exp;
 
 				// if exponent is all 1s now, return Infinity
@@ -298,7 +302,7 @@ else if(bitCount == 0)
 					.or(significand.shiftLeft(this.significand - eMin + exp - len + 2));
 
 		// clear most significant bit if number is implicit
-		if(implicit)
+		if(implicit && len > 0)
 			significand = significand.clearBit(len - 1);
 
 		BigInteger result = BigInteger.valueOf(sign)