User manual
mikroPascal PRO for PIC32
MikroElektronika
181
Literals
Literals are tokens representing xed numeric or character values.
The data type of a constant is deduced by the compiler using such clues as numeric value and format used in the
source code.
Integer Literals
Integral values can be represented in decimal, hexadecimal or binary notation.
In decimal notation, numerals are represented as a sequence of digits (without commas, spaces or dots), with optional
prex + or - operator to indicate the sign. Values default to positive (6258 is equivalent to +6258).
The dollar-sign prex ($) or the prex 0x indicates a hexadecimal numeral (for example, $8F or 0x8F).
The percent-sign prex (%) indicates a binary numeral (for example, %01010000).
Here are some examples:
11 // decimal literal
$11 // hex literal, equals decimal 17
0x11 // hex literal, equals decimal 17
%11 // binary literal, equals decimal 3
The allowed range of values is imposed by the largest data type in mikroPascal PRO for PIC32 – longint. Compiler
will report an error if the literal exceeds 2147483647 ($7FFFFFFF).
Floating Point Literals
A oating-point value consists of:
- Decimal integer
- Decimal point
- Decimal fraction
- e or E and a signed integer exponent (optional)
You can omit either the decimal integer or decimal fraction (but not both).
Negative oating constants are taken as positive constants with the unary operator minus (-) prexed.
mikroPascal PRO for PIC32 limits oating-point constants to range ±1.17549435082 * 10-38 .. ±6.80564774407 *
1038.
0. // = 0.0
-1.23 // = -1.23
23.45e6 // = 23.45 * 10^6
2e-5 // = 2.0 * 10^-5
3E+10 // = 3.0 * 10^10
.09E34 // = 0.09 * 10^34