17.16.3.3 Operators

The operators permitted in expression are:

Operators

• Operator

Description

Precedence

-

Unary minus

highest

^

Powers and roots

*

Multiplication

/

Division

%

Percentage

+

Addition

-

Subtraction

=

Equal to

<>

Not equal to

<

Less than

lowest

<=

Less than or equal to

>

Greater than

Operators

>=

Greater than or equal to

Operators in expression having the same precedence associate left-to-right.

[Example: Given that X is a bookmark for the text 4, and Y is a bookmark for the text 2, the field

=((-1 + X^2) * 3

produces the result 21.5. end example]

The equality, inequality, and relational operators yield 1 for true and 0 for false. An expression with value 0 tests logically false while one with any non-zero value tests true.