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util/bit53.lua @ 13854:0b01f40df0f9 13.0
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| author | Matthew Wild <mwild1@gmail.com> |
|---|---|
| date | Fri, 18 Apr 2025 12:25:06 +0100 |
| parent | 13449:9912baa541c0 |
| 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
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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
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2 return { |
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12365
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util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
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3 band = function (a, b, ...) |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
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diff
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4 local ret = a & b; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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5 if ... then |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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6 for i = 1, select("#", ...) do |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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7 ret = ret & (select(i, ...)); |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
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8 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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9 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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10 return ret; |
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af02b033bd7f
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Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
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11 end; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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12 bor = function (a, b, ...) |
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Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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13 local ret = a | b; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
14 if ... then |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
15 for i = 1, select("#", ...) do |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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16 ret = ret | (select(i, ...)); |
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util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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17 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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18 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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19 return ret; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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20 end; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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21 bxor = function (a, b, ...) |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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22 local ret = a ~ b; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
23 if ... then |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
24 for i = 1, select("#", ...) do |
|
af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
25 ret = ret ~ (select(i, ...)); |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
26 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
|
27 end |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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28 return ret; |
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af02b033bd7f
util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
parents:
12358
diff
changeset
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29 end; |
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13449
9912baa541c0
util.bit53: Add bnot() method
Matthew Wild <mwild1@gmail.com>
parents:
12365
diff
changeset
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30 bnot = function (x) |
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9912baa541c0
util.bit53: Add bnot() method
Matthew Wild <mwild1@gmail.com>
parents:
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diff
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31 return ~x; |
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util.bit53: Add bnot() method
Matthew Wild <mwild1@gmail.com>
parents:
12365
diff
changeset
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32 end; |
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d77d8fba44ad
util.bit53: Add left- and right shift operations
Kim Alvefur <zash@zash.se>
parents:
10241
diff
changeset
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33 rshift = function (a, n) return a >> n end; |
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d77d8fba44ad
util.bit53: Add left- and right shift operations
Kim Alvefur <zash@zash.se>
parents:
10241
diff
changeset
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34 lshift = function (a, n) return a << n end; |
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10241
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
35 }; |
|
48f7cda4174d
util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
diff
changeset
|
36 |