<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
the	O
Tak	B-Algorithm
function	I-Algorithm
is	O
a	O
recursive	O
function	O
,	O
named	O
after	O
Ikuo	O
Takeuchi	O
( 竹内郁雄	O
)	O
.	O
</s>
<s>
John	O
McCarthy	O
named	O
this	O
function	O
tak( )	O
after	O
Takeuchi	O
.	O
</s>
<s>
Though	O
written	O
in	O
exactly	O
the	O
same	O
manner	O
as	O
others	O
,	O
the	O
Haskell	B-Language
code	O
below	O
runs	O
much	O
faster	O
.	O
</s>
