| Type: | Package |
| Title: | Compute Fletcher Checksums (16, 32, and 64 Bit) |
| Version: | 0.1.0 |
| Description: | Computes Fletcher's position-dependent checksum in 16-, 32-, and 64-bit widths. Fletcher's checksum, devised by John G. Fletcher, provides error-detection properties approaching a cyclic redundancy check at lower computational cost. Input is processed as little-endian words with the final partial word zero-padded, so results are reproducible across platforms. |
| License: | MIT + file LICENSE |
| Encoding: | UTF-8 |
| URL: | https://github.com/chrislongros/fletcher |
| BugReports: | https://github.com/chrislongros/fletcher/issues |
| Suggests: | tinytest |
| NeedsCompilation: | yes |
| RoxygenNote: | 7.3.2 |
| Packaged: | 2026-07-06 14:22:29 UTC; chris |
| Author: | Christos Longros [aut, cre] |
| Maintainer: | Christos Longros <chris.longros@gmail.com> |
| Repository: | CRAN |
| Date/Publication: | 2026-07-15 17:50:13 UTC |
Compute a Fletcher checksum
Description
Computes Fletcher's position-dependent checksum. Input is processed as little-endian words with the final partial word zero-padded, so the result is reproducible across platforms.
Usage
fletcher(x, width = 32L)
Arguments
x |
A character string, a raw vector, or an integer/numeric vector of
byte values (0-255) coercible with |
width |
Checksum width in bits; one of |
Value
A lowercase hexadecimal string of width / 4 characters.
Examples
fletcher("abcde", 16) # "c8f0"
fletcher("abcde", 32) # "f04fc729"
fletcher("abcde", 64) # "c8c6c527646362c6"