IMHO in such case the variable name should be changed from 'increment' to 'decrement'. Or better - change algorithm to more intuitive: 
my $increment = ($second - $first) / ($steps - 1);
...
push @array, $first += $increment;

[download]
And one-line @array generator as alternative:

my @array = map { $first + $increment * $_ } 0 .. $steps - 1;

In reply to Re^2: Determine steps between two numbers by grizzley
in thread Determine steps between two numbers by thmsdrew

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