https://github.com/halleysfifthinc/vaxdata.jl

VAX data format library
https://github.com/halleysfifthinc/vaxdata.jl

dec julia libvaxdata vax

Last synced: 3 months ago
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VAX data format library

• Host: GitHub
• URL: https://github.com/halleysfifthinc/vaxdata.jl
• Owner: halleysfifthinc
• License: mit
• Created: 2018-06-05T18:04:41.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2022-09-05T01:10:33.000Z (over 2 years ago)
• Last Synced: 2025-01-20T22:58:59.894Z (4 months ago)
• Topics: dec, julia, libvaxdata, vax
• Language: Julia
• Size: 57.6 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# VaxData

[![version](https://juliahub.com/docs/VaxData/version.svg)](https://juliahub.com/ui/Packages/VaxData/T8cvD)

[![pkgeval](https://juliahub.com/docs/VaxData/pkgeval.svg)](https://juliahub.com/ui/Packages/VaxData/T8cvD)

[![CI](https://github.com/halleysfifthinc/VaxData.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/halleysfifthinc/VaxData.jl/actions/workflows/CI.yml)

[![codecov.io](http://codecov.io/github/halleysfifthinc/VaxData.jl/coverage.svg?branch=master)](http://codecov.io/github/halleysfifthinc/VaxData.jl?branch=master)

[![Project Status: Active – The project has reached a stable, usable state and is being actively developed.](https://www.repostatus.org/badges/latest/active.svg)](https://www.repostatus.org/#active)

VaxData.jl is a direct port to Julia from [libvaxdata](https://pubs.usgs.gov/of/2005/1424/) [^1]. See [this report](https://pubs.usgs.gov/of/2005/1424/of2005-1424_v1.2.pdf) for an in-depth review of the underlying structure and differences between VAX data types and IEEE types.

There are 5 Vax datatypes implemented by this package: `VaxInt16`, `VaxInt32`, `VaxFloatF`,

`VaxFloatG`, and `VaxFloatD`.

# Examples

```julia

julia> one(VaxFloatF)

vaxf"1.0"

julia> -one(VaxFloatF)

vaxf"-1.0"

julia> vaxg"3.14159265358979323846264338327950"

vaxg"3.1415926535897931"

julia> vaxd"3.14159265358979323846264338327950"

vaxd"3.14159265358979323"

```

Conversion to and from each type is defined; Vax types are promoted to the next appropriately sized type supporting math operations:

```julia

promote_type(VaxFloatF, Float32)

Float32

promote_type(VaxFloatF, VaxFloatF)

Float32

promote_type(VaxFloatF, Float64)

Float64

```

[^1]: Baker, L.M., 2005, libvaxdata: VAX Data Format Conversion Routines: U.S. Geological Survey Open-File Report 2005-1424 (http://pubs.usgs.gov/of/2005/1424/).