Sorry. I swapped the ends around when posting. That should [901,0], but the point still stands:

$some_pos = 950;

print +( $_->[1] < $_->[0] and $_->[1] >= $some_pos )
    ? 'contained'
    : 'not contained' for [901,0];;
not contained

[download]

A range of 100 starting at 901 will wrap around to end at position 0, thereby covering position 950; but your test fails to detect it.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
RIP an inspiration; A true Folk's Guy

In reply to Re^3: Unexpected under-dispersion in random simulations by BrowserUk
in thread Unexpected under-dispersion in random simulations by daverave

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