This is the cl-intbytes Reference Manual, version 0.1.0, generated automatically by Declt version 4.0 beta 2 "William Riker" on Mon Feb 26 15:20:41 2024 GMT+0.
The main system appears first, followed by any subsystem dependency.
cl-intbytesEncode/decode any-base integers and byte arrays interchangeably.
André Miranda
André Miranda
(GIT git@github.com:EuAndreh/cl-intbytes.git)
LLGPL
# cl-intbytes - Convert between any-base integers and byte arrays interchangeably
[](http://quickdocs.org/cl-intbytes/)
[](https://travis-ci.org/EuAndreh/cl-intbytes)
[](https://circleci.com/gh/EuAndreh/cl-intbytes)
[](https://coveralls.io/r/EuAndreh/cl-intbytes?branch=master)
Inspired by [cl-mongo](https://github.com/fons/cl-mongo/blob/bb1f807a17c960dc81bebd5e8a2df5d0886d422a/src/octets.lisp).
## Usage
“‘lisp
* (ql:quickload :cl-intbytes)
; => (:CL-INTBYTES)
* (use-package :intbytes)
; => T
“‘
For easy/ready encoding/decoding, use ‘int32->octets‘/‘octets->int32‘ and ‘int64->octets‘/‘octets->int64‘. All accept an ‘&optional (start 0)‘ value:
“‘lisp
* (int32->octets 84215045)
; => #(5 5 5 5)
* (octets->int32 *)
; => 84215045
* (octets->int32 #(0 5 5 5 5) 1)
; => 84215045
* (int64->octets 578437695752307201)
; => #(1 2 3 4 5 6 7 8)
* (octets->int64 *)
; => 578437695752307201
“‘
For unsigned values, there are equivalent unsigned functions ‘octets->uint32‘ and ‘octets->uint64‘:
“‘lisp
* (int32->octets -123)
; => #(133 255 255 255)
* (octets->uint32 *)
; => 4294967173
* (int64->octets -1)
; => #(255 255 255 255 255 255 255 255)
* (octets->uint64 *)
; => 18446744073709551615
* (octets->int64 **)
; => -1
“‘
You can create your own functions with ‘int->octets‘ and ‘octets->int‘:
“‘lisp
* (defun int16->octets (int16)
(int->octets int16 2))
; => INT16->OCTETS
* (defun octets->int16 (array &optional (start 0))
(octets->int array 2 start))
; => OCTETS->INT16
* (defun octets->uint16 (array &optional (start 0))
(octets->uint array 2 start))
; => OCTETS->UINT16
* (int16->octets -3)
; => #(253 255)
* (octets->uint16 *)
; => 65533
* (octets->int16 **)
; => -3
* (octets->int16 #(0 253 255) 1)
; => -3
“‘
If you want to encode floats to bytes, use [‘ieee-floats‘](https://github.com/marijnh/ieee-floats):
“‘lisp
* (int64->octets (ieee-floats:encode-float64 1.5d0))
; => #(0 0 0 0 0 0 248 63)
* (ieee-floats:decode-float64 (octets->int64 *))
; => 1.5d0
“‘
## Dependencies
This library depends on [fast-io](https://github.com/rpav/fast-io).
The test package uses the [prove](https://github.com/fukamachi/prove) test library.
cl-intbytes is used by [cl-BSON](https://github.com/EuAndreh/cl-BSON).
## Installation
“‘lisp
(ql:quickload :cl-intbytes)
“‘
## Bugs
If you find any bug or inconsistency in the code, or if you find it too hard to use, please, feel free to open an issue.
## Tests
This library is tested under [SBCL](http://www.sbcl.org/) and [CCL](http://ccl.clozure.com/) Common Lisp implementations.
To run all the defined tests, use:
“‘lisp
* (asdf:test-system :cl-intbytes)
; prints lots of (colorful) stuff...
; => T
“‘
Tests are ran with [Travis CI](https://travis-ci.org/EuAndreh/cl-intbytes) and [Circle CI](https://circleci.com/gh/EuAndreh/cl-intbytes) using [cl-travis](https://github.com/luismbo/cl-travis), [CIM](https://github.com/KeenS/CIM), [cl-coveralls](https://github.com/fukamachi/cl-coveralls) and [Roswell](https://github.com/snmsts/roswell). Check it out!
## Author
+ [André Miranda](https://github.com/EuAndreh)
## License
[LLGPL](https://tldrlegal.com/license/lisp-lesser-general-public-license#fulltext).
0.1.0
fast-io (system).
src/cl-intbytes.lisp (file).
readme.md (file).
Files are sorted by type and then listed depth-first from the systems components trees.
cl-intbytes/src/cl-intbytes.lispcl-intbytes (system).
int->octets (function).
int32->octets (function).
int64->octets (function).
octets->int (function).
octets->int32 (function).
octets->int64 (function).
octets->uint (function).
octets->uint32 (function).
octets->uint64 (function).
uint->int (function).
Packages are listed by definition order.
cl-intbytesThis package defines general-purpose functions to encode integers into octets-vectors of given sizes and functions decode them back. Also, it defines functions for common encoding formats (‘INT32->OCTETS‘, ‘INT64->OCTETS‘) and functions for common decoding formats (‘OCTETS->INT32‘, ‘OCTETS->INT64‘, ‘OCTETS->UINT32‘, ‘OCTETS->UINT64‘).
intbytes
common-lisp.
int->octets (function).
int32->octets (function).
int64->octets (function).
octets->int (function).
octets->int32 (function).
octets->int64 (function).
octets->uint (function).
octets->uint32 (function).
octets->uint64 (function).
uint->int (function).
Definitions are sorted by export status, category, package, and then by lexicographic order.
Writes all the bytes of a given ‘INT‘ into an array of type ’(UNSIGNED-BYTE 8) with length of ‘N-BYTES‘.
Writes ‘INT32‘ into an array of type ’(UNSIGNED-BYTE 8) with 4 elements.
Writes ‘INT64‘ into an array of type ’(UNSIGNED-BYTE 8) with 8 elements.
Interprets ‘N-BYTES‘ of a given ‘ARRAY‘ as an unsigned integer using ‘OCTETS->UINT‘, then converts to a signed value using ‘UINT->INT‘.
Interprets 4 bytes of the given ‘ARRAY‘ as a signed integer, starting from ‘(START 0)‘.
Inteprets 8 bytes of the given ‘ARRAY‘ as a signed integer, starting from ‘(START 0)‘.
Interprets ‘N-BYTES‘ of a given ‘ARRAY‘ as an unsigned integer.
Inteprets 4 bytes of the given ‘ARRAY‘ as a unsigned integer, starting from ‘(START 0)‘.
Interprets 8 bytes of the given ‘ARRAY‘ as a unsigned integer, starting from ‘(START 0).
Converts a given ‘UINT‘ into a signed int based on the given ‘INT-SIZE‘.
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