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Four bit adder: Difference between revisions
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[[File:4bit_adder_connector.png]] [[File:4bit_adder_panel.png]] [[File:4bit_adder_diagram.png]]
=={{header|Lambdatalk}}==
<lang Scheme>
{def xor
{lambda {:a :b}
{or {and :a {not :b}} {and :b {not :a}}}}}
-> xor
{def halfAdder
{lambda {:a :b}
{cons {and :a :b} {xor :a :b}}}}
-> halfAdder
{def fullAdder
{lambda {:a :b :c}
{let { {:b :b}
{:ha1 {halfAdder :c :a}} }
{let { {:ha1 :ha1}
{:ha2 {halfAdder {cdr :ha1} :b}} }
{cons {or {car :ha1} {car :ha2}} {cdr :ha2}} }}}}
-> fullAdder
{def 4bitsAdder
{lambda {:a4 :a3 :a2 :a1 :b4 :b3 :b2 :b1}
{let { {:a4 :a4} {:a3 :a3} {:a2 :a2} {:b4 :b4} {:b3 :b3} {:b2 :b2}
{:fa1 {fullAdder :a1 :b1 false}} }
{let { {:a4 :a4} {:a3 :a3} {:b4 :b4} {:b3 :b3}
{:fa1 :fa1}
{:fa2 {fullAdder :a2 :b2 {car :fa1}}} }
{let { {:a4 :a4} {:b4 :b4}
{:fa1 :fa1} {:fa2 :fa2}
{:fa3 {fullAdder :a3 :b3 {car :fa2}}} }
{let { {:fa1 :fa1} {:fa2 :fa2} {:fa3 :fa3}
{:fa4 {fullAdder :a4 :b4 {car :fa3}}} }
{car :fa4} {cdr :fa4} {cdr :fa3} {cdr :fa2} {cdr :fa1}}}}}}}
-> 4bitsAdder
{def bin2bool
{lambda {:b}
{if {W.empty? {W.rest :b}}
then {= {W.first :b} 1}
else {= {W.first :b} 1} {bin2bool {W.rest :b}}}}}
-> bin2bool
{def bool2bin
{lambda {:b}
{if {S.empty? {S.rest :b}}
then {if {S.first :b} then 1 else 0}
else {if {S.first :b} then 1 else 0}{bool2bin {S.rest :b}}}}}
-> bool2bin
{def bin2dec
{def bin2dec.r
{lambda {:p :r}
{if {A.empty? :p}
then :r
else {bin2dec.r {A.rest :p} {+ {A.first :p} {* 2 :r}}}}}}
{lambda {:p} {bin2dec.r {A.split :p} 0}}}
-> bin2dec
{def add
{def numbers 0000 0001 0010 0011 0100 0101 0110 0111
1000 1001 1010 1011 1100 1101 1110 1111}
{lambda {:a :b}
{bin2dec
{bool2bin
{4bitsAdder {bin2bool {S.get :a {numbers}}}
{bin2bool {S.get :b {numbers}}}}}}}}
-> add
{table
{S.map {lambda {:i} {tr
{S.map {{lambda {:i :j} {td {add :i :j}}} :i}
{S.serie 0 15}}}}
{S.serie 0 15}}
}
->
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
</lang>
=={{header|Lua}}==
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