bit.neg
Lua function

bit.neg

Summary

Bitwise negate (ones complement)

Prototype

n = bit.neg (a)


Description

This takes one argument. It is converted to a signed 'long long' (64-bit integer). The result is the ones-complement of the number (zero bits become one, one bits become zero).
eg.


print (bit.neg (1)) --> -2
print (bit.band (14, bit.neg (8)))  --> 6  (clear 8-bit)


See Also ...

Topics

DOC_lua_base Lua base functions
DOC_lua_bc Lua bc (big number) functions
DOC_lua_bit Lua bit manipulation functions
DOC_lua_coroutines Lua coroutine functions
DOC_lua_debug Lua debug functions
DOC_lua_io Lua io functions
DOC_lua_math Lua math functions
DOC_lua_os Lua os functions
DOC_lua_package Lua package functions
DOC_lua_rex Lua PCRE regular expression functions
DOC_lua Lua script extensions
DOC_lua_string Lua string functions
DOC_lua_tables Lua table functions
DOC_lua_utils Lua utilities
DOC_scripting Scripting

Lua functions

LUA_bit.ashr bit.ashr (Shifts a number right, preserving sign)
LUA_bit.band bit.band (Bitwise 'and')
LUA_bit.bor bit.bor (Bitwise 'or')
LUA_bit.mod bit.mod (Bitwise 'modulus' (remainder after integer divide))
LUA_bit.shl bit.shl (Shifts a number left)
LUA_bit.shr bit.shr (Shifts a number right)
LUA_bit.tonumber bit.tonumber (Convert a string into a number)
LUA_bit.tostring bit.tostring (Convert a number into a string)
LUA_bit.xor bit.xor (Bitwise 'exclusive or')

(Help topic: lua=bit.neg)

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