Made to Order Software Corporation - IEEE

Push Data

Alexis Wilke — Sun, 03 Jan 2010 04:45:16 +0000

SWF Action

Action Category:

Stack

Action Details:

Action Identifier:

150

Action Structure:

struct {
	unsigned char   f_type
	<type>          f_data
} f_push_data[<variable>];

Action Length:

-1 byte(s)

Action Stack:

push <variable> (a)

Action Operation:

a₁ = f_data[0];1
push(a₁);
a₂ = f_data[1];
push(a₂);
a₃ = f_data[2];
push(a₃);
...
a_n = f_data[n];
push(a_n);

1. Notice that the first data in the action is the last accessible on your stack.

Action Flash Version:

[un]signed double float

Alexis Wilke — Mon, 30 Nov 2009 11:53:33 +0000

Tag Flash Version:

Used by PushData Action:

Available in PushData Action

A double float is a standard IEEE 754 floating point value of 64 bits.

The value is defined as follow:

1 bit for the sign
11 bits for the exponent
52 bits for the mantissa

This type is similar to most processor double float type and can thus be used directly.

Note that in some cases, double floats are saved with the lower 32 bits of their mantissa after the upper bits. In other wise, the two 32 bits value are swapped.

[un]signed long float

Alexis Wilke — Mon, 30 Nov 2009 10:03:11 +0000

Tag Flash Version:

Used by PushData Action:

Available in PushData Action

A long float is a standard IEEE 754 floating point value of 32 bits.

The value is defined as follow:

1 bit for the sign
8 bits for the exponent
23 bits for the mantissa

This is the standard 32 bit floating point type on most processors and thus in most languages.

IEEE Standard 754

Alexis Wilke — Mon, 30 Nov 2009 05:30:34 +0000

The original document by Steve Hollasch can be found at http://steve.hollasch.net/cgindex/coding/ieeefloat.html

IEEE Standard 754 Floating Point Numbers

Steve Hollasch / Last update 2005-Feb-24

[un]signed short float

Alexis Wilke — Mon, 30 Nov 2009 01:40:01 +0000

Tag Flash Version:

Used by PushData Action:

Not available in PushData Action

A standard IEEE 754 floating point value of 16 bits.

The value is defined like a 32 bits floating points with:

1 bit for the sign
5 bits for the exponent
10 bits for the mantissa

The easiest way to deal with these floats once loaded is to convert them to 32 bits floats.