Lines Matching refs:delta
4088 # $delta is positive for a forward search, negative for a backward one.
4089 my $delta = $from < $to ? +1 : -1;
4092 my $limit = $delta > 0 ? $#dbline : 1;
4096 # If $delta is positive (going forward), $limit will be $#dbline.
4098 # $delta of 1 (positive), so the result is > 0 and we should use $to
4102 # times $delta of 1 (positive), so the result is < 0 and we should
4105 # If $delta is negative (going backward), $limit will be 1.
4106 # If $to is zero, ($limit - $to) will be 1, times $delta of -1
4111 # times $delta of -1 (negative), so the result is not > 0, and
4114 # If $to is 1, ($limit - $to) will zero, times $delta of -1
4118 # if $to is >1, ($limit - $to) will be negative, times $delta of -1
4122 $limit = $to if ($limit - $to) * $delta > 0;
4127 # by $delta: either -1 (back) or +1 (ahead).
4131 $i += $delta while $dbline[$i] == 0 and ($limit - $i) * $delta > 0;
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