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Bitwise operations on the bytes of strings in Lua. - Keywords: lua bit-manipulation string-manipulation

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lua-strbit
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Pedro Gimeno 53402ebaa9 Add license statement to testsuite.lua too 9 år sedan
.gitignore 4717c08d4d Add .gitignore 9 år sedan
Makefile 232683e284 Add first version. Only rotation supported so far. 9 år sedan
README.md 1ae9af9eca Add README.md and license 9 år sedan
strbit.c 4f1f714c07 Fix a forgotten change that introduced a bug in XOR and OR 9 år sedan
testsuite.lua 53402ebaa9 Add license statement to testsuite.lua too 9 år sedan

README.md

strbit

The purpose of this Lua module is to perform bitwise operations on the bytes of Lua strings, "in parallel". It's probably most useful when manipulating bitmaps represented as strings (e.g. for collision detection in games), but there may be other uses.

Supported bitwise operations are: bshiftleft (and shift right via negative parameter), band, bor, bxor, bnot.

This software is licensed under the zlib license.

(C) Copyright 2015 Pedro Gimeno Fortea. All rights reserved.

This software is provided 'as-is', without any express or implied warranty. In no event will the author or authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.