IBM 5100 - Page 134

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To show how the OFX function works, we will use the matrix created in the pre-
vious example
(see the OCR function). To form matrix VAR into a user-defined
function, the following instruction would
be entered:
[]FX VAr~
APL responds with the name of
I NTG .... -4--------the user-defined function.
The
OFX function produces an explicit result (the array of characters that repre-
sents the name of the user-defined function), and the original definition of the
user-defined function
(if there was one) is replaced.
Now the function I NTG
can be displayed and executed:
VINTG[[]JV
'V
R~-INTG
A
[tJ R~··ApO
[2]
I ~<l
I:: ::~]
ST('~~~T: I~[ I ]~-I
[1·1·] lfoI+:1.
[5]
.. ~ ( I ~;A) ISTAI~T
V
INTG
5
1
'1
3
'+
c-
.. --
~
INTG
B
1
2
:3
1+
1::-
-.J
6 7
8
Following is an example that shows how the OCR and OFX functions can be
used to modify the definition of a function within another function_ This
example will
use the following user-defined function:
VINTG[[]]~l
'V Rf·INTG A
[:I.] R~-I~pO
[2] I~t
[3] START;R[I]~A
[1+] I~-·I+:I.
[5] ~(I~A)/START
V
INTG l+
l+ 1+ 4· 1+