---
name: "Barcode::DataMatrix::Constants"
section: "3pm"
platform: "linux"
package: "libbarcode-datamatrix-perl"
version: "0.10-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Barcode::DataMatrix::Constants"
---

# Barcode::DataMatrix::Constants(3pm)

Constants associated with the Reed-Solomon error correction encoding used for data matrices.

## NAME

Barcode::DataMatrix::Constants - Constants associated with the Reed-Solomon error correction encoding used for data matrices.

## DESCRIPTION

See \<https://en.wikipedia.org/wiki/Reed%E2%80%93Solomon\_error\_correction\> for more information.

### GFI

Exponent values used in the multiplication step of the Reed-Solomon encoding algorithm.

### GFL

Log values used in the multiplication step of the Reed-Solomon encoding algorithm.

### POLY

Coefficients of the Reed-Solomon coeeficients.  The keys of the `"POLY"` hash correspond to the order of the respective polynomial.