[Java] Correct defaults for UINT32 type. Issue aeron-io#455.

Author: mjpt777

sbe-tool/src/main/java/uk/co/real_logic/sbe/PrimitiveValue.java

@@ -59,18 +59,18 @@ public enum Representation
  public static final long NULL_VALUE_INT32 = -2147483648;
 
  public static final long MIN_VALUE_UINT32 = 0;
- public static final long MAX_VALUE_UINT32 = 4294967293L; // 0xFFFFFFFD
- public static final long NULL_VALUE_UINT32 = 4294967294L; // 0xFFFFFFFE
+ public static final long MAX_VALUE_UINT32 = 0xFFFF_FFFFL - 1;
+ public static final long NULL_VALUE_UINT32 = 0xFFFF_FFFFL;
 
- public static final long MIN_VALUE_INT64 = Long.MIN_VALUE + 1;  // (-2 ^ 63) + 1
- public static final long MAX_VALUE_INT64 = Long.MAX_VALUE;  // (2 ^ 63) - 1 (SBE spec says (-2 ^ 63) - 1)
- public static final long NULL_VALUE_INT64 = Long.MIN_VALUE;  // (-2 ^ 63)
+ public static final long MIN_VALUE_INT64 = Long.MIN_VALUE + 1; // (-2 ^ 63) + 1
+ public static final long MAX_VALUE_INT64 = Long.MAX_VALUE; // ( 2 ^ 63) - 1
+ public static final long NULL_VALUE_INT64 = Long.MIN_VALUE; // (-2 ^ 63)
 
  public static final long MIN_VALUE_UINT64 = 0;
  public static final BigInteger BI_MAX_VALUE_UINT64 = new BigInteger("18446744073709551614");
- public static final long MAX_VALUE_UINT64 = BI_MAX_VALUE_UINT64.longValue(); // (2 ^ 64)- 2
+ public static final long MAX_VALUE_UINT64 = BI_MAX_VALUE_UINT64.longValue(); // (2 ^ 64) - 2
  public static final BigInteger BI_NULL_VALUE_UINT64 = new BigInteger("18446744073709551615");
- public static final long NULL_VALUE_UINT64 = BI_NULL_VALUE_UINT64.longValue(); // (2 ^ 64)- 1
+ public static final long NULL_VALUE_UINT64 = BI_NULL_VALUE_UINT64.longValue(); // (2 ^ 64) - 1
 
  public static final float MIN_VALUE_FLOAT = Float.MIN_VALUE;
  public static final float MAX_VALUE_FLOAT = Float.MAX_VALUE;