Numeric literals

The syntax for numeric literals is defined as follows:

---

numeric_literal ::= { integer | fixed_pt_number | floating_pt_number }

integer ::= [{+|-}] unsigned_integer [.]

fixed_pt_number ::= [{+|-}]

{
unsigned_integer [.unsigned_integer] |
unsigned_integer. |
.unsigned_integer

}

floating_pt_number ::= fixed_pt_number E[{+|-}] unsigned_integer

unsigned_integer ::= digit...

---

digit

Decimal digit 0 to 9.
Integers and fixed-point literals can have up to 31 digits.

The data type of the literal is integer, fixed-point number or floating-point number with the specified number of digits to the right and left of the decimal point.