RosettaCodeData/Task/Averages-Mean-angle/Perl-6/averages-mean-angle.pl6
2016-12-05 22:15:40 +01:00

16 lines
391 B
Raku

# Of course, you can still use pi and 180.
sub deg2rad { $^d * tau / 360 }
sub rad2deg { $^r * 360 / tau }
sub phase ($c) {
my ($mag,$ang) = $c.polar;
return NaN if $mag < 1e-16;
$ang;
}
sub meanAngle { rad2deg phase [+] map { cis deg2rad $_ }, @^angles }
say meanAngle($_).fmt("%.2f\tis the mean angle of "), $_ for
[350, 10],
[90, 180, 270, 360],
[10, 20, 30];