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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file bit.lua
--
-- define module: bit
local bit = bit or {}
-- bit/and operation
function bit.band(a, b)
return a & b
end
-- bit/or operation
function bit.bor(a, b)
return a | b
end
-- bit/xor operation
function bit.bxor(a, b)
return a ~ b
end
-- bit/not operation
function bit.bnot(a)
return ~a
end
-- bit/lshift operation
function bit.lshift(a, b)
return a << b
end
-- bit/rshift operation
function bit.rshift(a, b)
return a >> b
end
-- tobit operation
function bit.tobit(x)
return x & 0xffffffff
end
-- tohex operation
function bit.tohex(x, n)
n = n or 8
local up
if n <= 0 then
if n == 0 then return '' end
up = true
n = - n
end
x = x & (16 ^ n - 1)
return ('%0'..n..(up and 'X' or 'x')):format(x)
end
-- return module: bit
return bit
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