Validity: Rule, Task
In general, these operators work between integer or real quantities.
If a real quantity is assigned to a variable of integer type, the decimal digits are truncated.
If the value is too large to be represented in the integer variable, the result will be unpredictable.
When an arithmetical operator combines a real with an integer, the result is converted to a real.
Addition
Sum operator between two numerical quantities.
Syntax |
valueA + valueB |
|---|---|
valueA |
First addend value |
valueB |
Second addend value |
Result |
The sum of the two values |
Examples:
; The register rr(12) will contain the sum of the current position of axis 2 cp(2) ; and the contents of register rr(3) rr(12) = cp(2) + rr(3) ; It can also be used as a sign (unary) operator. ; The register r(12) will contain the value +3 r(12) = +3 |
NOTE: To sum (concatenate) strings, use the operator #.
Subtraction
Subtraction operator between numerical quantities.
Syntax |
valueA - valueB |
|---|---|
valueA |
Value of the minuend |
valueB |
Value of the subtrahend |
Result |
The difference between minuend and subtrahend |
Examples:
; The register rr(12) will contain the difference between the contents of the register r(2) ; and the contents of the variable remainder rr(12) = r(2) - remainder ; It can also be used as a sign (unary) operator. ; The register r(12) will contain the value -3 r(12) = -3 |
Multiplication
Multiplication operator between numerical quantities.
Syntax |
valueA * valueB |
|---|---|
valueA |
Value of the first factor |
valueB |
Value of the second factor |
Result |
The multiplication between the factors |
Examples:
; The register rr(12) will contain the product between the constant K_PI (Pi) ; and the variable diameter rr(12) = K_PI * diameter |
Division
Division operator between numerical quantities.
Syntax |
valueA / valueB |
|---|---|
valueA |
Dividend value |
valueB |
Value of the divisor (different from 0) |
Result |
The division between dividend and divisor |
NOTE: In the case of division between integers, the result is only the integer part of the division even if the destination is a real quantity.
Examples:
; The register rr(12) will contain the quotient between the value 2.0 and the ; variable "value" in turn divided by the variable "remainder" REAL value = 10.0 REAL remainder = 0.5 rr(12) = (2.0 / value) / remainder |
