#              $file  $needle_bit_offset $needle_bit_length $repetitio
+ns
./bitstrstr test.dat           100000000               2000           
+10
needle found at 100000000, expected at 100000000 in 1.6/10 = 0.16ms

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Update: 

$ for i in 16 20 30 40 60 100 200 400 1000 3000 10000; do echo $i; ./b
+itstrstr test.dat 100000000 $i 10; done
16
needle found at 164016, expected at 100000000 in 1.1/10 = 0.11ms
20
needle found at 949378, expected at 100000000 in 1.8/10 = 0.18ms
30
needle found at 100000000, expected at 100000000 in 1018.4/10 = 101.84
+ms
40
needle found at 100000000, expected at 100000000 in 38/10 = 3.8ms
60
needle found at 100000000, expected at 100000000 in 924.1/10 = 92.41ms
100
needle found at 100000000, expected at 100000000 in 12/10 = 1.2ms
200
needle found at 100000000, expected at 100000000 in 6.2/10 = 0.62ms
400
needle found at 100000000, expected at 100000000 in 3.7/10 = 0.37ms
1000
needle found at 100000000, expected at 100000000 in 2.3/10 = 0.23ms
3000
needle found at 100000000, expected at 100000000 in 0.9/10 = 0.09ms
10000
needle found at 100000000, expected at 100000000 in 0.4/10 = 0.04ms

[download]

In reply to Re^13: [OT] The interesting problem of comparing (long) bit-strings. by salva
in thread [OT] The interesting problem of comparing bit-strings. by BrowserUk

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