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Arithmetic Operators

  • Artikkeli

Applies To: Microsoft Dynamics AX 2012 R3, Microsoft Dynamics AX 2012 R2, Microsoft Dynamics AX 2012 Feature Pack, Microsoft Dynamics AX 2012

Use arithmetic operators to perform calculations in X++. Except for ~, which is unary, all arithmetic operators are dyadic; that is, they work on two operands. The syntax of arithmetic expressions is: expression1 ArithmeticOperator expression2.

Operator

Term

Description

<<

Left shift

Performs expression2 left shift (a multiplication by 2) on expression1.

>>

Right shift

Performs expression2 right shift (a division by 2) on expression1.

*

Multiply

Multiplies expression1 by expression2.

/

Divide

Divides expression1 by expression2.

DIV

Integer division

Performs an integer division of expression1 by expression2.

MOD

Integer remainder

Returns the remainder of an integer division of expression1 by expression2.

~

Not

Unary operator. Performs a binary not-operation.

&

Binary AND

Performs a binary and-operation on expression1 and expression2.

^

Binary XOR

Performs a binary XOR-operation on expression1 and expression2.

|

Binary OR

Performs a binary or-operation on expression1 and expression2.

+

Plus

Adds expression1 to expression2.

-

Minus

Subtracts expression2 from expression1.

?

Ternary operator

Takes three expressions: expression1 ? expression2 : expression3. If expression1 is true, expression2 is returned; otherwise, expression3 is returned.

Examples

Operator

Example

Description

<<

i = 1 << 4;

Performs 4 left shifts on 1 (1*2*2*2*2). This gives: i=16.

>>

i = 16 >> 4;

Performs 4 right shifts on 16 (16/2/2/2/2). This gives i=1.

*

i = 4*5;

Multiplies 4 by 5. i=20.

/

i = 20/5;

Divides 20 by 5. i=4.

div

i = 100 div 21;

Returns the integer division of 100 by 21. i=4 (4*21 = 84, remainder 16).

mod

i = 100 mod 21;

Returns the remainder of the integer division of 100 by 21. i=16.

~

i = ~1;

Binary negates 1. This gives i=-2 (all bits are reversed).

&

i = 1 & 3;

Binary AND. Return the bits in common in the two integers. i=1.

|

i = 1 | 3;

Binary OR. Return the bits set in either 1 or 3. i=3.

^

i = 1 ^ 3;

Binary XOR. Returns the bits set in 1 and NOT in 3 and vice versa. i=2.

+

i = 1 + 3;

Adds 1 and 3. i=4.

-

i = 3 - 1;

Subtracts 1 from 3. i=2.

?

i = (400>4) ? 1 : 5;

If (400>4) 1 is returned, else 5 is returned. As 400>4, 1 is returned. i=1.

See also

Assignment Operators

Expressions Syntax

Operator Precedence

Relational Operators

Ternary Operator (?)

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