tools/test/sort/regression/data/test_nums

   1   123456789
   2   123456789.1234
   3   987654321.7654
   4   987654321.765400
   5   -123456789
   6   -987654321.2345
   7 -1234567890
   8 -987654321
   9 123456789
  10 987654321
  11     -1234567890
  12     987654321
  13     -987654321.9876
  14     -987654321
  15     123456789.1234
  16     123456789