Constants value inside a X/script source can be of the following types:
•Integer constant;
•Hexadecimal constant;
•Real constant:
•Character constant;
•String constant.
Integer constant
Integer constants are considered all numbers composed only by digit in range 0-9, optionally prefixed with + or - symbol. Integer numbers are 32bit, so the validity range is from –2.147.483.648 to +2.147.483.648
Hexadecimal constant
Hexadecimal constants are considered all number prefixed with 0x and followed by digit in range 0-9 and A-F. Since they are unsigned and 32bit, the validity range is from 0 to 0xFFFFFFFF ((+4.294.967.296)).
Real constant
Real constant are considered all numbers composed only by digit in range 0-9 and/or symbols . and E, optionally prefixed with + or - symbol. Real numbers are 64bit so the validity range is from –1.8E308 to +1.8E308; the smallest representable value is 4.19E-307.
Character constant
Character constant are composed only by one character between a couple of symbols '. Some special characters (for escape sequences) are:
•‘\t’ tabulator;
•‘\r’ carriage return
•‘\n’ line feed
•‘\b’ backspace
•‘\xnn’ hexadecimal value nn
String constant
String constant are an arbitrary sequence of character between a couple of symbols ".
NOTE: strings constants are not divisible along different source lines.