Cpp literal improve.

Author: lygstate

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/cpp/CppGenerator.java

@@ -2407,24 +2407,41 @@ private CharSequence generateLiteral(final PrimitiveType type, final String valu
  break;
 
  case UINT32:
+ {
+ final long intValue = Long.parseLong(value);
+ literal = "UINT32_C(0x" + Integer.toHexString((int)intValue) + ")";
+ break;
+ }
  case INT32:
- literal = value;
+ final long intValue = Long.parseLong(value);
+ if (intValue == Integer.MIN_VALUE)
+ {
+ literal = "INT32_MIN";
+ }
+ else
+ {
+ literal = "INT32_C(" + Long.toString(intValue) + ")";
+ }
  break;
 
  case FLOAT:
  literal = value.endsWith("NaN") ? "SBE_FLOAT_NAN" : value + "f";
  break;
 
  case INT64:
- literal = value + "L";
- if (value.equals("-9223372036854775808"))
+ final long longValue = Long.parseLong(value);
+ if (longValue == Long.MIN_VALUE)
  {
  literal = "INT64_MIN";
  }
+ else
+ {
+ literal = "INT64_C(" + String.valueOf(longValue) + ")";
+ }
  break;
 
  case UINT64:
- literal = "0x" + Long.toHexString(Long.parseLong(value)) + "L";
+ literal = "UINT64_C(0x" + Long.toHexString(Long.parseLong(value)) + ")";
  break;
 
  case DOUBLE: