Numeric Literal
Numeric literals are constant numeric values that take the form [+/-]nnn[.nnn] where the +/- is optional, the nnn’s are numerics (0-9) and the [.nnn] decimal portion is also optional.
Integers are entered:
<nnn>S: short number (16-bit integer)<nnn>I: integer number (32-bit integer)<nnn>L: long number (64-bit integer)- Examples: 123s, 3i, 97L, etc.
Fixed Decimals are entered:
<nnn>: fixed decimal of size (, 0 ) <nnn>.: fixed decimal of size (, 0 ) .<nnn>: fixed decimal of size (, ) <nnn>.<nnn>: fixed decimal of size (, ) - Examples: 9 (1, 0), 34. (2, 0), .6512 (4, 4), 764.45 (5, 2)
Floating Point numbers are entered:
<nnn>.<nnn>E<sign><nnn> : depending on the number magnitude the compiler creates either a single precision or a double precision floating point constant. The <sign> is optional. The syntax of the left hand side of the E follows the rules for fixed decimals
Remarks
- The + or - sign must be the leftmost character, if present. An unsigned literal is treated as a positive number.
- Blanks cannot appear in a numeric literal.
- The . character is used as a decimal point (e.g. -12.53 ).
Example
1.2, -45.6, +89.2