Software / code / prosody
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util/bit53.lua @ 12358:d77d8fba44ad
util.bit53: Add left- and right shift operations
While not used by anything in Prosody, it is known to be used by some
3rd party modules.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Mon, 28 Jun 2021 03:56:45 +0200 |
| parent | 10241:48f7cda4174d |
| child | 12365:af02b033bd7f |
| rev | line source |
|---|---|
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10241
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
1 -- Only the operators needed by net.websocket.frames are provided at this point |
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48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
2 return { |
|
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
3 band = function (a, b) return a & b end; |
|
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
4 bor = function (a, b) return a | b end; |
|
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
5 bxor = function (a, b) return a ~ b end; |
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12358
d77d8fba44ad
util.bit53: Add left- and right shift operations
Kim Alvefur <zash@zash.se>
parents:
10241
diff
changeset
|
6 rshift = function (a, n) return a >> n end; |
|
d77d8fba44ad
util.bit53: Add left- and right shift operations
Kim Alvefur <zash@zash.se>
parents:
10241
diff
changeset
|
7 lshift = function (a, n) return a << n end; |
|
10241
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
8 }; |
|
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
9 |
