User Guide

Operators 143

Floating-point numbers are converted to integers by discarding any digits after the decimal

point. Positive integers are converted to an unsigned hexadecimal value with a maximum

value of 4294967295 or 0xFFFFFFFF; values larger than the maximum have their most

significant digits discarded when they are converted so the value is still 32-bit. Negative

numbers are converted to an unsigned hexadecimal value via the two's complement notation,

with the minimum being -2147483648 or 0x800000000; numbers less than the minimum

are converted to two's complement with greater precision and also have the most significant

digits discarded.

The return value is interpreted as a two's complement number with sign, so the return value is

an integer in the range -2147483648 to 2147483647.

Availability: ActionScript 1.0; Flash Player 5

Operands

expression : Number - A number.

Returns

Number - The result of the bitwise operation.

Example

The following example demonstrates a use of the bitwise NOT (-) operator with flag bits:

var ReadOnlyFlag:Number = 0x0001; // defines bit 0 as the read-only flag

var flags:Number = 0;

trace(flags);

/* To set the read-only flag in the flags variable,

the following code uses the bitwise OR:

flags |= ReadOnlyFlag;

trace(flags);

/* To clear the read-only flag in the flags variable,

first construct a mask by using bitwise NOT on ReadOnlyFlag.

In the mask, every bit is a 1 except for the read-only flag.

Then, use bitwise AND with the mask to clear the read-only flag.

The following code constructs the mask and performs the bitwise AND:

flags &= ~ReadOnlyFlag;

trace(flags);

// output: 0 1 0