User manual

mikroPascal PRO for PIC32
MikroElektronika
215
Operators Precedence and Associativity
There are 4 precedence categories in mikroPascal PRO for PIC32. Operators in the same category have equal
precedence with each other.
Each category has an associativity rule: left-to-right (→), or right-to-left (←). In the absence of parentheses, these rules
resolve the grouping of expressions with operators of equal precedence.
Precedence Operands Operators Associativity
4 1
@ not + -
←
3 2
* / div mod and shl shr
→
2 2
+ - or xor
→
1 2`
= <> < > <= >=
→
Arithmetic Operators
Arithmetic operators are used to perform mathematical computations. They have numerical operands and return
numerical results. Since the char operators are technically bytes, they can be also used as unsigned operands in
arithmetic operations.
All arithmetic operators associate from left to right.
Operator Operation Operands Result
+
addition
byte, short, word, integer,
longint, dword, real
byte, short, word,
integer, longint, dword,
real
-
subtraction
byte, short, word, integer,
longint, dword, real
byte, short, word, integer,
longint, dword, real
*
multiplication
byte, short, word, integer,
longint, dword, real
word, integer, longint,
dword, real
/
division, oating-point
byte, short, word, integer,
longint, dword, real
real
div
division, rounds down to
nearest integer
byte, short, word, integer,
longint, dword
byte, short, word,
integer, longint, dword
mod
modulus, returns the remainder
of integer division (cannot be
used with oating points)
byte, short, word, integer,
longint, dword
byte, short, word,
integer, longint, dword
Division by Zero
If 0 (zero) is used explicitly as the second operand (i.e. x div 0), the compiler will report an error and will not generate
code.
But in case of implicit division by zero: x div y, where y is 0 (zero), the result will be the maximum integer (i.e 255, if
the result is byte type; 65536, if the result is word type, etc.).