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util/bit53.lua @ 13182:c48ae06e24d6

util.datamanager: Fix indexing first item if not at the very start If the first item does not start at position 0 then the index function produces a phantom first entry covering position zero until where the real first item starts. When using the index, this would make it either appear as the first item was missing or cause an off-by-one issue with remaining items.

author	Kim Alvefur <zash@zash.se>
date	Mon, 10 Jul 2023 17:19:05 +0200
parent	12365:af02b033bd7f

rev	line source
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
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395) Kim Alvefur <zash@zash.se> parents: diff changeset	2 return {
12365 af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	3 band = function (a, b, ...)
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	4 local ret = a & b;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	5 if ... then
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	6 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	7 ret = ret & (select(i, ...));
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	8 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	9 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	10 return ret;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	11 end;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	12 bor = function (a, b, ...)
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	13 local ret = a \| b;
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
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
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	16 ret = ret \| (select(i, ...));
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	17 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	18 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	19 return ret;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	20 end;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	21 bxor = function (a, b, ...)
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	22 local ret = a ~ b;
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
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, ...));
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	26 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	27 end
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	28 return ret;
af02b033bd7f util.bit53: Support for more than 2 arguments, for compat with bit32 Matthew Wild <mwild1@gmail.com> parents: 12358 diff changeset	29 end;
12358 d77d8fba44ad util.bit53: Add left- and right shift operations Kim Alvefur <zash@zash.se> parents: 10241 diff changeset	30 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	31 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	32 };
48f7cda4174d util.bitops: Library to find appropriate bitwise library (closes #1395) Kim Alvefur <zash@zash.se> parents: diff changeset	33

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util/bit53.lua

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util/bit53.lua @ 13182:c48ae06e24d6

Software `/` code `/` prosody