Fixed-Point Blockset: Index (Fixed-Point Blockset)

Fixed-Point Blockset

A

accumulation

scaling recommendations

using slope/bias encoding

accumulator data type

and feedback controller demo

scaling recommendations

using slope/bias encoding

arithmetic shift

automatic scaling

and feedback controller demo

and FixPt Look-Up Table (2D) block

and percent safety margin <1> <2>

B

back propagation

FixPt Data Type Propagation block

FixPt Gateway Out block

FixPt Tapped Delay block

backward integrator realization

and feedback controller demo

bit

bitwise operation

block configuration

selecting a data type

selecting a scaling

block icon labels

block parameters

blocks

FixPt Absolute Value

FixPt Bitwise Operator

FixPt Conversion <1> <2>

FixPt Conversion Inherited

FixPt Data Type Propagation

FixPt Dead Zone

FixPt Dot Product

FixPt Dynamic Look-Up Table

FixPt FIR <1> <2>

FixPt Gain <1> <2>

FixPt Gateway In <1> <2>

FixPt Gateway In Inherited

FixPt Gateway Out

FixPt Integer Delay

FixPt Logical Operator

FixPt Look-Up Table

FixPt Look-Up Table (2-D)

FixPt Matrix Gain <1> <2>

FixPt Multiport Switch

FixPt Product <1> <2> <3>

FixPt Relational Operator

FixPt Saturation

FixPt Sum <1> <2>

FixPt Tapped Delay

FixPt Unary Minus

FixPt Unit Delay

FixPt Zero-Order Hold

blockset library

boolean operation

built-in data types

C

code generation <1> <2>

and multiplication

and signal conversions

and stored integer output

computational noise

computational units

constant scaling for best precision

limitations for code generation

contiguous bits

fixed-point to fixed-point

fixed-point to fixed-point, inherited

See also online conversion, offline conversion

converting old models

D

data types <1> <2>

fractional numbers

generalized fixed-point numbers

overriding with doubles

denormalized numbers

derivative realization

development cycle

dialog box parameters

lock output scaling

logging min/max data

overflow handling

overriding with doubles

digital controller

direct form realization

and feedback controller demo

scaling recommendations <1> <2>

using slope/bias encoding

double bits <1> <2>

double-precision format

doubles override

E

Embedded-C Real-Time Target

encoding scheme

eps

examples

constant scaling for best precision

conversions and arithmetic operations

converting a built-in model to fixed-point

converting from doubles to fixed-point

division process

fixed-point format

fixed-point scaling

FixPt Bitwise Operator

FixPt Gateway In

FixPt Look-Up Table

FixPt Look-Up Table (2D)

generating pure integer code

limitations on precision and errors

limitations on range

maximizing precision

multiplication process

saturation and wrapping

selecting a measurement scale

shifting bits and the radix point

shifting bits but not the radix point

summation process

exceptional arithmetic

exponent for IEEE numbers

F

feedback design

filter

filtered derivative realization

filters and systems

fix

fixed-point interface tool

and feedback controller demo

fixed-point numbers

fixpt_convert

fixpt_convert_prep

fixptbestprec

FixPtSimRanges

float <1> <2>

floating-point numbers

forward integrator realization

fraction for IEEE numbers

fractional numbers

fractional slope

G

scaling recommendations <1> <2>

using slope/bias encoding

gateway

fixed-point to Simulink

Simulink to fixed-point

Simulink to fixed-point, inherited

generalized fixed-point numbers

Generic Real-Time Target

global override with doubles

guard bits <1> <2> <3>

GUI

See also fixed-point interface tool

H

I

IEEE floating-point numbers

format

double precision

single precision

infinity <1> <2>

inherited

by back-propagation

fixed-point to fixed-point conversion

by back-propagation

Simulink to fixed-point conversion

and code generation

outputting large values

integrator realization

L

least significant bit

library <1> <2>

and feedback controller demo

lock output scaling

and feedback controller demo

logging

large integer values

simulation results <1> <2>

logical operation

look-up table

LSB. See least significant bit

M

propagating data type information for

measurement scales

modeling the system

most significant bit

scaling recommendations <1> <2>

using slope/bias encoding

multiport switch

N

nonstandard IEEE format

O

offline conversion

for addition and subtraction

for multiplication

online conversion

for addition and subtraction

for multiplication

overflow <1> <2> <3>

and code generation

handling by fixed-point blocks

logging <1> <2>

overriding with doubles <1> <2>

global override

individual override

P

padding with trailing zeros

and feedback controller demo

parallel form realization

parameter conversion

See also conversions

percent safety margin

plot system interface

port data type display

precision

of fixed-point numbers

of IEEE floating-point numbers

propagation of data types

Q

and feedback controller demo

of a real-world value <1> <2>

R

radix point-only scaling

range

of fixed-point numbers

of IEEE floating-point numbers

rapid simulation target

realizations

design constraints

lead-lag filter

series cascade form

Real-Time Workshop

Production Coder

rapid simulation target

Target Language Compiler

real-world value

relational operation

release information

restoring broken links

rounding modes <1> <2>

and code generation

RTW Production Coder

S

saturation <1> <2>

and feedback controller demo

scaling <1> <2>

and accumulation

and code generation

and multiplication

constant scaling for best precision

radix point-only <1> <2>

slope/bias <1> <2>

scientific notation

series cascade form realization

using the FixPt Conversion block

using the FixPt Gain block

showfixptsimranges <1> <2>

sign

of input signal

sign bit for IEEE numbers

signal conversions

Simulink

built-in data types

converting built-in data types to fixed-point

converting built-in models to fixed-point

converting fixed-point data types to built-in

Simulink Accelerator

single-precision format

slope/bias scaling

state-space realization

as block output

See also addition

T

Target Language Compiler

targeting an embedded processor

operation assumptions

size assumptions

trapezoidal integrator realization

two's complement

typographical conventions

U

updating old models

W

Z

zero order hold

Selected Bibliography