Benchmarks are FROM and TO decimal. The decimal test set is:

	1193046
	5124095576030430
	94522879700260683065598897150409950
	1743639370940744633935561489495120884528376069578043920


  t/benchmarkcnv.t
  make test BENCHMARK=1		FROM base to 'dec'
             Math::Base::Convert     using Math::BigInt
           method         function       function
         $bc->cnv(n)       cnv(n)        convert(n)
-------------------------------------------------------
100100011010001010110
   bin     0.782ms         1.341ms        32.041ms
10010001101000101011001111000100110101011110011011110
           1.333ms         1.887ms        78.000ms
100100011010001010110011110001001101010111100110111101111000000010010001101000101011001111000100110101011110011011110
           2.696ms         3.303ms       173.333ms
1001000110100010101100111100010011010101111001101111011110000000100100011010001010110011110001001101010111100110111101111111011011100101110101001100001110110010101000011001000010000
           4.438ms         4.992ms       270.000ms
-------------------------------------------------------
catagcaccct
   dna     0.824ms         1.562ms        21.189ms
catagcaccctcgtatctttggagcgt
           1.397ms         2.131ms        49.219ms
catagcaccctcgtatctttggagcgtggaaacatagcaccctcgtatctttggagcgt
           2.791ms         3.503ms       110.000ms
catagcaccctcgtatctttggagcgtggaaacatagcaccctcgtatctttggagcgtgggtgcgatgtttctacgctcccaagatacaa
           4.542ms         5.359ms       171.111ms
-------------------------------------------------------
4432126
   oct     0.828ms         1.649ms        17.005ms
221505317046536336
           1.406ms         2.225ms        40.385ms
443212636115274675700221505317046536336
           2.848ms         3.652ms        87.778ms
1106425474232571573600443212636115274675773345651416625031020
           4.735ms         5.552ms       138.182ms
-------------------------------------------------------
123456
   hex     0.794ms         1.929ms        16.020ms
123456789abcde
           1.333ms         2.441ms        36.364ms
123456789abcdef0123456789abcde
           2.671ms         3.787ms        79.000ms
123456789abcdef0123456789abcdefedcba9876543210
           4.405ms         5.552ms       123.200ms
-------------------------------------------------------
bencw
 bas32     0.846ms         1.341ms        15.000ms
erukz6jvpg1
           1.449ms         1.948ms        33.333ms
ci3fm1e3xtppaerukz6jvpg1
           2.930ms         3.420ms        72.791ms
bencwpcnlzxxqci3fm1e3xtpp4xf3tb2fimqq
           4.945ms         5.448ms       114.815ms
-------------------------------------------------------
50mG
   b62     0.894ms         1.827ms        14.395ms
nt2zIAA8u
           1.608ms         2.528ms        31.584ms
8jNYV0IWlg3SwHNKpVtY
           3.418ms         4.367ms        70.000ms
2WQLMo2pQMbq1zeL2FCZdyOFilbPFZK
           5.699ms         6.653ms       110.000ms
-------------------------------------------------------
4ZHM
   b64     0.934ms         1.923ms        14.484ms
ID5PuchpU
           1.544ms         2.528ms        31.782ms
4ZHMU9gytl0ID5PuchpU
           2.999ms         4.066ms        69.773ms
18qLdYQlDxm4ZHMU9gytlxSkfXsL38G
           5.000ms         6.004ms       110.000ms
-------------------------------------------------------
;$u
bas128     0.968ms         1.782ms        13.403ms
9DA#)%^w
           1.562ms         2.403ms        30.792ms
IQL_9:<z*9DA#)%^w
           3.130ms         3.990ms        66.522ms
aqhUJh!|xIQL_9:<z~&k}7o`yG
           5.031ms         5.878ms       105.000ms
-------------------------------------------------------
Iq=
bas256     0.916ms         2.009ms        13.319ms
Iq=?^`|
           1.460ms         2.589ms        30.000ms
Iq=?^`|}Iq=?^`|
           2.839ms         3.953ms        65.106ms
Iq=?^`|}Iq=?^`|:{_@>~oG
           4.600ms         5.735ms       101.290ms


  t/benchmarkcnv.t
  make test BENCHMARK=1		from 'dec' TO base
             Math::Base::Convert     using Math::BigInt
           method         function       function
         $bc->cnv(n)       cnv(n)        convert(n)
-------------------------------------------------------
100100011010001010110
   bin     0.465ms         1.078ms        35.682ms
10010001101000101011001111000100110101011110011011110
           1.085ms         1.705ms        89.429ms
100100011010001010110011110001001101010111100110111101111000000010010001101000101011001111000100110101011110011011110
           1.970ms         2.602ms       199.375ms
1001000110100010101100111100010011010101111001101111011110000000100100011010001010110011110001001101010111100110111101111111011011100101110101001100001110110010101000011001000010000
           3.068ms         3.698ms       318.000ms
ok 149
-------------------------------------------------------
catagcaccct
   dna     0.558ms         1.190ms        22.606ms
catagcaccctcgtatctttggagcgt
           1.239ms         1.869ms        54.407ms
catagcaccctcgtatctttggagcgtggaaacatagcaccctcgtatctttggagcgt
           2.223ms         2.848ms       118.077ms
catagcaccctcgtatctttggagcgtggaaacatagcaccctcgtatctttggagcgtgggtgcgatgtttctacgctcccaagatacaa
           3.402ms         4.040ms       184.706ms
ok 150
-------------------------------------------------------
4432126
   oct     0.528ms         1.157ms        17.112ms
221505317046536336
           1.202ms         1.833ms        41.600ms
443212636115274675700221505317046536336
           2.116ms         2.756ms        90.882ms
1106425474232571573600443212636115274675773345651416625031020
           3.312ms         3.917ms       142.857ms
ok 151
-------------------------------------------------------
123456
   hex     0.455ms         1.071ms        15.911ms
123456789abcde
           1.081ms         1.702ms        36.477ms
123456789abcdef0123456789abcde
           1.964ms         2.573ms        78.250ms
123456789abcdef0123456789abcdefedcba9876543210
           3.049ms         3.652ms       121.600ms
ok 152
-------------------------------------------------------
bencw
 bas32     0.550ms         1.593ms        14.630ms
erukz6jvpg1
           1.202ms         2.237ms        32.188ms
ci3fm1e3xtppaerukz6jvpg1
           2.130ms         3.140ms        70.227ms
bencwpcnlzxxqci3fm1e3xtpp4xf3tb2fimqq
           3.283ms         4.272ms       108.621ms
ok 153
-------------------------------------------------------
50mG
   b62     0.529ms         1.143ms        13.277ms
nt2zIAA8u
           1.433ms         2.051ms        29.907ms
8jNYV0IWlg3SwHNKpVtY
           3.068ms         3.698ms        65.000ms
2WQLMo2pQMbq1zeL2FCZdyOFilbPFZK
           5.129ms         5.753ms       100.645ms
ok 154
-------------------------------------------------------
4ZHM
   b64     0.531ms         1.157ms        13.235ms
ID5PuchpU
           1.209ms         1.838ms        29.537ms
4ZHMU9gytl0ID5PuchpU
           2.143ms         2.765ms        64.286ms
18qLdYQlDxm4ZHMU9gytlxSkfXsL38G
           3.262ms         3.886ms       100.000ms
ok 155
-------------------------------------------------------
;$u
bas128     0.484ms         1.111ms        11.894ms
9DA#)%^w
           1.202ms         3.242ms        28.288ms
IQL_9:<z*9DA#)%^w
           2.130ms         4.130ms        60.000ms
aqhUJh!|xIQL_9:<z~&k}7o`yG
           3.252ms         5.241ms        92.647ms
ok 156
-------------------------------------------------------
Iq=
bas256     0.492ms         1.097ms        11.894ms
Iq=?^`|
           1.190ms         4.658ms        26.864ms
Iq=?^`|}Iq=?^`|
           2.085ms         5.569ms        57.736ms
Iq=?^`|}Iq=?^`|:{_@>~oG
           3.222ms         6.604ms        88.571ms
ok 157