Binary Arithmetic () 2 2-adic integer 2jv/HomePage/cours/BinaryAlgebra.pdf · 2-adic integer NB→...

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BinaryArithmetic

(2) (2)(2)(2) (2)

a b a bb ba b a b

+ +

− −

× ×

Integer Ring : + − ×D

[ ]

2

:

( ) 2

ntt

t n

n t B

n

n

= →

=

D

2

binary sequence 2-adic integer

→N BZ

1y x= − − 2a c s r+ = + 2y x= 1 2y x= +

Binary Algebra©Vuillemin:2010-2047

/2n nB Z Z( ) ( )( ) ( )2

a b a b a ba b a b

+ = ∪ − ∩= ⊕ + ∩0 a b a b a b a b= ∩ ⇔ + = ∪ = ⊕

Disjoint Sum Integers modulo 2n

2

Increment[ ]

2

:

( ) 2

ntt

t n

n t B

n

n

= →

=

D

2

binary sequence 2-adic integer

→N BZ

Binary Algebra©Vuillemin:2010-2047

[0] [0] [0] 2 [1][1

[ ]2 ,

] [1] [1] 2 [2]

[ ]2

[0]

n n

a c s ca c s

A a n S s n

S A c

c+ = ++ = +

= =

= +∑ ∑

Parallel Increment

Serial Increment

1 22

1y x

c rx c y r

= ++ =

= ++

3

Bit SerialArithmetic

111

b bb bb b

− = +¬+ = −¬− = ¬−

[ ]

{ } { : 1= }

(2) 2

:nt

nt

t

t n

n t B

t n t B

n

n∈

= →

∈ = ∈

=

∑N

D

2

binary sequence integer subset 2-adic intege

2r

→N

N B

Z

Binary Algebra©Vuillemin:2010-2047

4

HybridFormulas

Binary Algebra©Vuillemin:2010-2047

∩∩

5

0

1

0

2 2 2n n

n nn n

n N n N

cc rc r+

∈ ∈

===∑ ∑

2

2 2 2 2 2 2t t t t t

t t t t tt t t t t

t N t N t N t N t N

a b c s r

a b c s r∈ ∈ ∈ ∈ ∈

+ + = +

+ + = +∑ ∑ ∑ ∑ ∑

Serial Add

a+b+c = s+2r

s = a+b c = 2r

Binary Algebra©Vuillemin:2010-2047

6

d = a-b ' 1' 2

1 2

b b ba b c d rc r

= ¬ =− −+ + = +

= +

Serial Subtract

Binary Algebra©Vuillemin:2010-2047

( )1

a b a ba b a b¬ − =¬ +− = + +¬

ALU

s= f(i)(a,b)

i f(i)01

+

i f(i)0123

+

Number of Instructions 2 4 8 16 32 64 ...

Two’s Complement

7

Parallel Adder

0 2 2 2 2k k k Nk k k N

k N k N k N

c a b s c< < <

+ + = +∑ ∑ ∑

0 0 0 0 1

1 1 1 1 2

22

a b c s ca b c s c+ + = ++ + = +

Binary Algebra©Vuillemin:2010-2047

8

Trade Time for Space

z=4 : 2b/cycle z=2 : 1b/cycle

22

a b c s rc rs a b

+ + = +== +

2

2

( ) ( ) 2

a u v u v

b w x w x

s u w v x

= + =

= + =

= + + + =

z=√2z2=2

Energy is now the DOMINANT design criteria for most soft&hard.Goal: minimal computation at minimal speed!

0.5b/cycle

Binary Algebra©Vuillemin:2010-2047

0 1 0 1 0 0 1 2

0 2

2 2 2 44

a a b b c s s cc cs a b

+ + + + = + +== +

a k b k s kk k ka B z b B z s B z= = =∑ ∑ ∑0 1( 2 )a a k

k ka B B z= +∑ 2 1 2a k a kk ku B z v B z+= =∑ ∑

9

SIMD

Binary Algebra©Vuillemin:2010-2047

8

8

8

8

2

2

kk

k

kk

k

x x

y y<

<

=

=

8

8

2

(mod 256)

kk

k

k k k

s s

s x y<

=

= +

Pack 8 bytes per 64b word

Compute the byte-wise sum!

7 8 642

128(0 1) (2 1)255

m= = −

( ) ( )( ) ( )

c x m y md x m y ms d c

= ∩ ⊕ ∩= ∩¬ + ∩¬= ⊕

MMXGPU 8 operations

Single 64b operation

8 : , 128k kk x y s x y∀ < < ⇒ = +

10

Binary Series

( ) ( )

( ) ( ) ( )

10 0

a b b aa b c a b ca aa

a b c a b a c

⊗ = ⊗⊗ ⊗ = ⊗ ⊗

⊗ =⊗ =

⊗ ⊕ = ⊗ ⊕ ⊗

( ) ( )

2 2 2

00

( )

a b b aa b c a b ca aa aa b a b

⊕ = ⊕⊕ ⊕ = ⊕

=

⊕ =

⊕=

mod( ) ( ) ( 2)a b a z b z⊗ ×

(mod 2)1 1

1n nz a

za= + + +

[ ]

(2) 2

:

( )

ntt

t nt

t n

nn t B

n

n z z∈

= →

=

=

D

2

2

binary sequence 2-adic integer

series ) (z

→N BZ

F

Series Ring: ⊕ ⊗D 2 2Polynomial Rings: [z]/ z [z]nnD F F

Convolution “carry-free” Product

11

SSS[ ]

{ } { : 1= }

(2) 2

(

:

)

nt

nt

t

t nt

t n

n t B

t n t B

n

n z z

n

= →

∈ =

=

=

N

D

2

2

binary sequence integer subset 2-adic integer

series

2

( )z

→N

N B

ZF

2 2( ) ( )n m n z zm zN N N P P PA A A D D D

= += == =

Binary Algebra©Vuillemin:2010-2047

Shuffle

( )( )

k

k

n kn k n z zn k n z z

D N∈ ∈

⇑ =

⇓ = ÷

Shift n kn k n kn k n k

D Z∈ ∈⇑− = ⇓⇓− = ⇑

2

2

( )

( ) ( (10) )( )

n n z n n

n n z n z∞

↑ = = ⊗

↓ = = ∩

21(10)

3

n n

n n n∞

↓↑ =−

↑↓ = ∩ = ∩

Sample

( )(( ) / )

n m n z mn n m

m n m z

=↑ + ↑=↓

=↓

2n nd n d d z⇑ = × = ⊗

Homework

64

Let word size be 64b.Let be a word.

Compute the words (l,h) such that:( 64).

Likewise for .

n

n l hn

D∈

↑ = + ⇑↓

12

Binary Rational

n22 = p 2 Write in binar7

y!np = ∑2 3

2 2 222 11 2 1= 0 2 01 2 010 2 ...7 7 7 7

+ = + = + =

222 0101(110)7

∞=

1 2

= ∩ =+ZP D QN

Binary Algebra©Vuillemin:2010-2047

nW = q 2rite in binary :1 2

nnqd

=+ ∑

0

2

(1 2 )1 2

mod

( ) k k

n q dk kk

n nq n

n − ++

= ∈= ∈

= ∈

Z

Z

B

72

22 30101110 27 7

−= +

4 5 62 2 2

22 3 5 60101 2 01011 2 010111 2 ...7 7 7 7

− − −= + = + = + =

32 2 3

3 3 3110 2 (110)7 7 1 2

∞− −= + = =

13

HenselDivision

10 0k kd n d n +− ≤ ≤ ⇒ − ≤ ≤

2 0 1 1( )1 2 i i i pn q q q qd − + −=

+

Initial part

Period

mod

( ,2)1 2 (

orde )

rdp

p d=

=

10 / 2k k k kn n n n+> ⇒ ≤ <

1(1 2 ) / 2k k k kn d n n n +< − + ⇒ < ≤

0t t

0 0.. 1

= q 2 q 2 21 2 1 2

(1 2 ) 2

t t k k

t kk

k k

n nqd dn d q n

<

= = ++ +

= + +

∑ ∑

- mod2 ( 1 2 )k

kn n d= +

2 0 12 0 1( ) 1 0

1 2 1 2p

p p

q qnq q q qd

−∞−= = = ⇔ − ≤ ≤

+ −

Homework1- Compute sign.2- Compute quotient & remainderfrom

period=0 exact d

initial part & pe

i

r .

vide

iod

Binary Algebra©Vuillemin:2010-2047

14

RationalSeries

nWrite as a bin22 = p a 7

ry series!np z= ∑01101 1101 011 11= 0 01 010111 111 111 111

01 10101 01010 010(110)111 111

z z z zz z z

z z z z

z zz z z

z z

• = • = • =

• = • =

2

2

[ ]1 [

]

zz z

=+FPF

Binary Algebra©Vuillemin:2010-2047

15

Binary Algebra

11 2

11

n

zn

∈ ⊂ =¬ ∪ ∩ ⊕

+ × −⊗ •

<

↓ ↑ ⇑

[ ]

(2) 2

:

( )

ntt

t nt

t n

nn t B

n

n z z∈

= →

=

=

D

2

2

binary sequence 2-adic integer

series ) (z

→N BZ

F

⊕ ⊗⊕ ∩+ − ×

DDD

Binary Operations

3 Rings + Many Hybrids !

0 0 ( 0 0)0

x y x y x yx y x y x y x y y x

× = ⇔ ⊗ = ⇔ = ∪ =∩ = ⇔ + = ∪ = ⊕ ⇔ ⊆ ¬

Odd inverses

1 1 21 2

n naa

= + + +−

15/10/2009 Binary Algebra - Vuillemin

(mod 2)1 1

1n nz a

za= + + +

2 2 2: nSubrings ZD P A C D

16

Valuation [ ]

(2) 2

:

( )

ntt

t nt

t n

nn t B

n

n z z∈

= →

=

=

D

{ }

2

2

2 2( )

( ) min(0) , (1) 0

0 2 (1 2 ')v d

v d n dv v

d s d

= ∈

=+∞ =

≠ ⇒ = +Valuation

{ }2 2 2 2

2 2 2 2

( ) ( ) ( ) ( )( ) ( ) min ( ), ( )

v x y v x y v x v yv x y v x y v x v y

× = ⊗ = +

− = ⊕ ≥

( 1) 2( 1) 2 1( 1) 2 1

v

v

v

x x xx xx x x

∩ − = −¬ ∩ − = −⊕ − = + −1

22

2

v

v

v

x xx xx x +

∩− =∪− = −⊕− = −

2

2

2 2

(0)(1 2 ) 0

(2 ) 1 ( )

vv xv x v x

= ∞+ =

= +

17

Measures

1 11

n nz aza

= ⊕ ⊕ ⊕⊕

[ ]

(2) 2

:

( )

ntt

t nt

t n

nn t B

n

n z z∈

= →

=

=

D

Distance

and 1 1 21 2

n naa

= + + +−

2 ( )2 [0,1]v dd R−= ∈ ∩

Norm { }ma

0 0

x ,

x x

x y x y x y

x y x yx y

= ⇔ =

× = ⊗ = ×

≤≤+ +

{ }

( , ) ( , )( , ) 0

( , ) (max ( , ), ( , ) , ) ( , )

d x y d y x x y x yd x y x y

d x z d x y d y zd x y d y z

= = − = ⊕

= ⇔ =

≤ +≤

Big-Endian: R Little-Endian: D.

converge!

HomeworkAll triangles isosceles!

converges 0 lim n nnd d

→∞⇔ =∑

Ultra-metric

{ }2 ( ) minv x k x= ∈

18

Endians

2 0 2

1/2 0

Little Endian:

Big Endian

2

:

2 [0,2 ]

nn n

nn n

q q q

q q q −

= ∈

= ∈ ∩

∑∑

Z

R

Integer Operations

11 2

11

n

zn

+ ×

⊂¬ ∪ ∩ ⊕∈

⊗ •

<

÷

↓ ↑ ⇑

LE = Little Endian = from LSB to MSB.BE = Big Endian = from MSB to LSB.EE = Either Endian = one, or the other.AE = Any Endian = any order.

19

Subset: { } : { 1}nb n b= ∈ =N (z-series: ) n

nn

b z b z∈

= ∑N

Digital Number b∈D

2-adic integer: (2) 2nnn

b b∈

= ∑N

1 ( ) !2

Real: 2nn

n

b is not uni ueb q∈

= ∑N

0 1 2Sequence: ( ) b b b b=N

Digital Sign (a : )l ) (nn

b t b t n∈

= ∂ −∑N

Predicate: ( ) nb n b=

Binary Algebra©Vuillemin:2010-2047

20

Digital Function 1. Continuous: each output depends upon finitely many inputs.

2. Computable : presented by a finite program.

3. Causal : present output depends upon past input.

→D D

Binary Algebra©Vuillemin:2010-2047

11 2

11

n

zn

∈ ⊂¬ ∪ ∩ ⊕

+ × −⊗ •

= <

↓ ↑ ⇑

4. Sequential : causal + finite memory finite circuit.

5. Memoryless : Boolean function

11 2

11

n

zn

= <

×

∈ ⊂¬ ∪ ∩ ⊕

+ −⊗ •

↓ ↑ ⇑ ⇓

Présentateur
Commentaires de présentation
Software programs terminate. Circuits compute forever. Software programs require unbounded memory. Circuits have finite memory. Circuits can be simulated by software. Software needs circuit to execute.

21

Binary Algebra

12 2... ... 2

1 2n⊂ ⊂ ⊂ ⊂ ⊂ ⊂ ⊂ ⊂ ⊂ ⊂

+ZF N Z A DZ

NB B

= ∈ ⊂ ¬ ∩ ∪ ⊕

Words:Catenate, shifts, star, residual

Sets:

1 / (1 2 )d+ − × −Integers:

Series: 1 / (1 )zd⊗ ⊕ − ↑ ↓

* −• ⇑ ⇓

Binary Algebra©Vuillemin:2010-2047

22

What am I doing here?

1. Function2. Algorithm3. Specify4. Verify5. Instrument6. Implement7. Optimize8. Synthesize9. Validate10. Sell

Binary Algebra©Vuillemin:2010-2047

Tall Thin Designercuts across all trades

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