Sort numbers lexicographically

It is somewhat odd that the task name is sort numbers lexicographically but immediately backtracks in the task header to sorting integers lexicographically. Why only integers? This will sort ANY real numbers lexicographically. For a non-integer, assumes that the given number is a hard boundary and 1 is a "soft" boundary. E.G. The given number is definitely included; 1 is only a threshold, it is included if it matches exactly. (Could be the other way around, this it the way I choose.)

sub lex (Real $n, $step = 1) {
    ($n < 1 ?? ($n, * + $step …^ * > 1)
            !! ($n, * - $step …^ * < 1)).sort: ~*
}

# TESTING
for 13, 21, -22, (6, .333), (-4, .25), (-5*π, e) {
    my ($bound, $step) = |$_, 1;
    say "Boundary:$bound, Step:$step >> ", lex($bound, $step).join: ', ';
}

Output:

Boundary:13, Step:1 >> 1, 10, 11, 12, 13, 2, 3, 4, 5, 6, 7, 8, 9
Boundary:21, Step:1 >> 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 20, 21, 3, 4, 5, 6, 7, 8, 9
Boundary:-22, Step:1 >> -1, -10, -11, -12, -13, -14, -15, -16, -17, -18, -19, -2, -20, -21, -22, -3, -4, -5, -6, -7, -8, -9, 0, 1
Boundary:6, Step:0.333 >> 1.005, 1.338, 1.671, 2.004, 2.337, 2.67, 3.003, 3.336, 3.669, 4.002, 4.335, 4.668, 5.001, 5.334, 5.667, 6
Boundary:-4, Step:0.25 >> -0.25, -0.5, -0.75, -1, -1.25, -1.5, -1.75, -2, -2.25, -2.5, -2.75, -3, -3.25, -3.5, -3.75, -4, 0, 0.25, 0.5, 0.75, 1
Boundary:-15.707963267948966, Step:2.718281828459045 >> -10.271399611030876, -12.989681439489921, -15.707963267948966, -2.116554125653742, -4.834835954112787, -7.553117782571832, 0.6017277028053032