MUSHclient documentation: bit.shl

bit.shl

bit.shl
Lua function bit.shl Summary Shifts a number left Prototype `n = bit.shl (num, bits)` Description `This takes two arguments. The first is converted to signed 'long long' (64-bit integer), the second to unsigned 'long long' (64-bit unsigned integer). The first argument is shifted left the number of bits in the second argument. You can use this for signed or unsigned numbers, as the sign bit will still be preserved. eg. print (bit.shl (4, 6)) --> 256` See Also ... Topics Lua base functions Lua bc (big number) functions Lua bit manipulation functions Lua coroutine functions Lua debug functions Lua io functions Lua math functions Lua os functions Lua package functions Lua PCRE regular expression functions Lua script extensions Lua string functions Lua table functions Lua utilities Scripting Lua functions bit.ashr (Shifts a number right, preserving sign) bit.band (Bitwise 'and') bit.bor (Bitwise 'or') bit.mod (Bitwise 'modulus' (remainder after integer divide)) bit.neg (Bitwise negate (ones complement)) bit.shr (Shifts a number right) bit.tonumber (Convert a string into a number) bit.tostring (Convert a number into a string) bit.xor (Bitwise 'exclusive or') (Help topic: lua=bit.shl) Documentation contents page

Lua function

bit.shl

Summary

Shifts a number left

Prototype

n = bit.shl (num, bits)

Description

This takes two arguments. The first is converted to signed 'long long' (64-bit integer), the second to unsigned 'long long' (64-bit unsigned integer). The first argument is shifted left the number of bits in the second argument.



You can use this for signed or unsigned numbers, as the sign bit will still be preserved.



eg.




print (bit.shl (4, 6)) --> 256