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my $lo_pos = binary_search(0,$#F,$lo,\&reader,\@F,2); my $hi_pos = binary_search($lo_pos,$#F,$hi,\&reader,\@F,2);
Did 6 probes for low Did 6 probes for high ... Did 6 probes for low Did 7 probes for high 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64