Are you a hacker?
Don't you know the C precedence table by heart?
Then why do you need those crazy parentheses around the multiplication?
Isn't this enough:
sub test1 {
(($_[0] & $_[1]) * 2113665 & 17895697) % 15;
}
Anyway, I like your method.
Nice idea to search in HAKMEM.
As you can see below, I've given a less concise solution.
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