in reply to Re^2: sub as mathematical function
in thread sub as mathematical function

Oh ... off by max, again! ;-)

update

I wouldn't count on correct input though, and additional max seems safe

  DB<5> print $_,":",max(min(int(9*$_/18),8),0),"\n" for -2..20
-2:0
-1:0
0:0
1:0
2:1
3:1
4:2
5:2
6:3
7:3
8:4
9:4
10:5
11:5
12:6
13:6
14:7
15:7
16:8
17:8
18:8
19:8
20:8

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Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

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Re^4: sub as mathematical function
by davido (Cardinal) on Sep 04, 2019 at 18:12 UTC

    The subexpression 9*X/18 == (9x)/18 == x/2. Therefore, max(min(int($_ / 2), 8, 0);


    Dave

[reply]
[d/l]
      The core of the formula was 9*$v I was just trying to cover all edges cases for $v in a one liner.

      Cheers Rolf
      (addicted to the Perl Programming Language :)
      Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

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