Bitwise operations: Difference between revisions
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(J: add a minimal bit of description) |
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=={{header|J}}== |
=={{header|J}}== |
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Here are the "bitwise operators": |
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<lang j>bAND=: 17 b. NB. 16+#.0 0 0 1 |
<lang j>bAND=: 17 b. NB. 16+#.0 0 0 1 |
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bOR=: 23 b. NB. 16+#.0 1 1 1 |
bOR=: 23 b. NB. 16+#.0 1 1 1 |
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bRAshift=: 34 b.~ - |
bRAshift=: 34 b.~ - |
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bLrot=: 32 b.~ |
bLrot=: 32 b.~ |
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bRrot=: 32 b.~ - |
bRrot=: 32 b.~ -</lang> |
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And here is a routine which takes a list of bitwise operators and two numbers and displays a table of results from combining those two numbers with each of the operators: |
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: |
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smoutput (((":x),"1' ',.(>u),.' '),"1":y),"1' => ',"1'.X'{~#:x u`:0 y |
smoutput (((":x),"1' ',.(>u),.' '),"1":y),"1' => ',"1'.X'{~#:x u`:0 y |
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)</lang> |
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) |
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And here they are in action: |
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254 bAND`bOR`bXOR`b1NOT`bLshift`bRshift`bRAshift`bLrot`bRrot bitwise 3 |
<lang j> 254 bAND`bOR`bXOR`b1NOT`bLshift`bRshift`bRAshift`bLrot`bRrot bitwise 3 |
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254 bAND 3 => ............................X. |
254 bAND 3 => ............................X. |
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254 bOR 3 => ......................XXXXXXXX |
254 bOR 3 => ......................XXXXXXXX |
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