NB. default comparison tolerance matches the python result
   ".;._2]0 :0
      100000000000000.01 =   100000000000000.011
      100.01 =   100.011
      (10000000000000.001 % 10000.0) =   1000000000.0000001000
      0.001 =   0.0010000001
      0.000000000000000000000101 =   0.0
      (= ([: *~ %:)) 2                    NB. sqrt(2)*sqrt(2)
      ((= -)~ ([: (* -) %:)) 2            NB. -sqrt(2) * sqrt(2),   -2.0
      3.14159265358979323846 =   3.14159265358979324
)
1 0 1 0 0 1 1 1


   NB. tolerance of 1e_12 matches the python result
   ".;._2]0 :0[CT=:1e_12
      100000000000000.01 =!.CT   100000000000000.011
      100.01 =!.CT   100.011
      (10000000000000.001 % 10000.0) =!.CT   1000000000.0000001000
      0.001 =!.CT   0.0010000001
      0.000000000000000000000101 =!.CT   0.0
      (=!.CT ([: *~ %:)) 2                    NB. sqrt(2)*sqrt(2)
      ((=!.CT -)~ ([: (* -) %:)) 2            NB. -sqrt(2) * sqrt(2),   -2.0
      3.14159265358979323846 =!.CT   3.14159265358979324
)
1 0 1 0 0 1 1 1


   NB. tight tolerance
   ".;._2]0 :0[CT=:1e_18
      100000000000000.01 =!.CT   100000000000000.011
      100.01 =!.CT   100.011
      (10000000000000.001 % 10000.0) =!.CT   1000000000.0000001000
      0.001 =!.CT   0.0010000001
      0.000000000000000000000101 =!.CT   0.0
      (=!.CT ([: *~ %:)) 2                    NB. sqrt(2)*sqrt(2)
      ((=!.CT -)~ ([: (* -) %:)) 2            NB. -sqrt(2) * sqrt(2),   -2.0
      3.14159265358979323846 =!.CT   3.14159265358979324
)
1 0 0 0 0 0 0 1

   2 (=!.1e_8) 9
|domain error
|   2(=    !.1e_8)9