Arithmetic Operators
Arithmetic operators, which take real or integer operands, include +, -, *, /, div, and mod.
Binary Arithmetic Operators
Operator Operation
Operand Types Result Type Example
+
addition
integer, real
integer, real
X + Y
-
subtraction
integer, real
integer, real
Result - 1
*
multiplication
integer, real
integer, real
P * InterestRate
/
real division
integer, real
real
X / 2
div
integer division integer
integer
Total div UnitSize
mod
remainder
integer
integer
Y mod 6
Unary arithmetic operators
Operator Operation
Operand Type Result Type Example
+
sign identity
integer, real
integer, real
+7
-
sign negation integer, real
integer, real
-X
The following rules apply to arithmetic operators.
The value of
x / y
is of type Extended, regardless of the types of
x
and
y
. For other arithmetic operators, the
result is of type Extended whenever at least one operand is a real; otherwise, the result is of type Int64 when
at least one operand is of type Int64; otherwise, the result is of type Integer. If an operand's type is a subrange
of an integer type, it is treated as if it were of the integer type.
The value of
x div y
is the value of
x / y
rounded in the direction of zero to the nearest integer.
The mod operator returns the remainder obtained by dividing its operands. In other words,
x mod y = x (x
div y) * y
.
A runtime error occurs when y is zero in an expression of the form
x / y
,
x div y
, or
x mod y
.
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