prosody
9a86e7cbdd79
util/bit53.lua

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util/bit53.lua @ 13262:9a86e7cbdd79

mod_storage_internal: Fix fast trimming of archive with exactly one item This method would previously never delete the first (and only) item since it works out which item should become the first item after the trim operation, which doesn't make sense when all should be removed. This also works as an optimization for when all the last item should be trimmed, thus items should be removed.
author Kim Alvefur <zash@zash.se>
date Sun, 24 Sep 2023 13:41:54 +0200
parent 12365:af02b033bd7f
child 13449:9912baa541c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
10241
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
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1 -- Only the operators needed by net.websocket.frames are provided at this point
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
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2 return {
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af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
Matthew Wild <mwild1@gmail.com>
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3 band = function (a, b, ...)
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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4 local ret = a & b;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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5 if ... then
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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parents: 12358
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6 for i = 1, select("#", ...) do
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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7 ret = ret & (select(i, ...));
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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parents: 12358
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8 end
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9 end
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10 return ret;
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parents: 12358
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11 end;
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parents: 12358
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12 bor = function (a, b, ...)
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13 local ret = a | b;
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parents: 12358
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14 if ... then
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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parents: 12358
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15 for i = 1, select("#", ...) do
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16 ret = ret | (select(i, ...));
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17 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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parents: 12358
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18 end
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19 return ret;
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20 end;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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21 bxor = function (a, b, ...)
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22 local ret = a ~ b;
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parents: 12358
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23 if ... then
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32
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parents: 12358
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24 for i = 1, select("#", ...) do
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parents: 12358
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25 ret = ret ~ (select(i, ...));
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26 end
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parents: 12358
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27 end
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28 return ret;
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29 end;
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d77d8fba44ad util.bit53: Add left- and right shift operations
Kim Alvefur <zash@zash.se>
parents: 10241
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30 rshift = function (a, n) return a >> n end;
d77d8fba44ad util.bit53: Add left- and right shift operations
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parents: 10241
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31 lshift = function (a, n) return a << n end;
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48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
Kim Alvefur <zash@zash.se>
parents:
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32 };
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395)
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parents:
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33