https://github.com/jancajthaml-go/damm

damm check-digit validator and generator
https://github.com/jancajthaml-go/damm

checkdigit checksum damm digit

Last synced: 5 months ago
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damm check-digit validator and generator

• Host: GitHub
• URL: https://github.com/jancajthaml-go/damm
• Owner: jancajthaml-go
• License: unlicense
• Created: 2017-08-03T06:53:14.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2021-02-18T07:51:52.000Z (over 5 years ago)
• Last Synced: 2023-09-05T03:12:30.392Z (almost 3 years ago)
• Topics: checkdigit, checksum, damm, digit
• Language: Go
• Homepage:
• Size: 23.4 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
## damm checksum algorithm

[![Go Report Card](https://goreportcard.com/badge/jancajthaml-go/damm)](https://goreportcard.com/report/jancajthaml-go/damm)

### Usage ###

```

import "github.com/jancajthaml-go/damm"

ok := damm.Validate("00123014764700968325")

digit, error := damm.Digit("x")

checksum := damm.Generate("1")

```

### Performance ###

```

BenchmarkDammSmall-4           500000000    3.80 ns/op   0 B/op   0 allocs/op

BenchmarkDammLarge-4           50000000     38.5 ns/op   0 B/op   0 allocs/op

BenchmarkDammSmallParallel-4   1000000000   2.09 ns/op   0 B/op   0 allocs/op

BenchmarkDammLargeParallel-4   100000000    15.2 ns/op   0 B/op   0 allocs/op

```

verify your performance by running `make benchmark`

### Resources ###

* [Wikipedia - Damm algorithm](https://en.wikipedia.org/wiki/Damm_algorithm)