There seems to be two ways to do integers on the C64 (and yes I know floats
are fastest), I was wondering about these two methods of generating a
random positive number between 1 and 64 inclusive:

10 X=INT(64*RND(0)+1)

or

10 X%=64*RND(0)+1

The latter saves two whole bytes, but is it faster to convert to integer
directly with the INT keyword, or is the implicit declaration below faster?

Second question, let's say you want to generate a random number in multiple
places, you could use the above several times in a listing, but one could
also define a function as I understand it, like:

0 DEF FN A(X)=X*RND(0)

So each time in your listing, you will have,

10 X%=FN A(39): Y%=FN A(24)
...
100 S%=FN A(10)+1: D%=FN A(10)+1

etc...

Other than less typing throughout the program (where you might have lots of
repeated random number generation in this example), are there any benefits
to using CBM functions? Does it save bytes overall would be perhaps one
that I could think of.

Many thanks,

Shaun.

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