Arithetic Operators

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Arithetic Operators

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Arithmetic operators, which take real or integer operands, include +, –, *, /, div, and mod.

 

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

 

Operator        Operation        Operand type        Result type        Example

+ (unary)        sign identity        integer, real        integer, real        +7

– (unary)        sign negation        integer, real        integer, real        -X

 

The following rules apply to arithmetic operators.

 

1) 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.

 

2) The value of x div y is the value of x/y rounded in the direction of zero to the nearest integer.

 

3) The mod operator returns the remainder obtained by dividing its operands. In other words, x mod y = x – (x div y) * y.