I always chuckle at: 
sub pie() {
    2 * atan2(1, 0);
}

[download]
as in "compute pi/2, then double it", instead of just computing pi directly: 
sub pi () {
  atan2(0, -1);
}

[download]

-- Randal L. Schwartz, Perl hacker

In reply to Re: Lissajous curves by merlyn
in thread Lissajous curves by ambrus

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