Read and write fixed-width / flat-file / mainframe data in DuckDB with SQL — Perl unpack / Python struct / COBOL copybooks (COMP-3, EBCDIC, OCCURS, REDEFINES). A VGI worker.

SIMD-accelerated packed-decimal and zoned-decimal decode and batch record scanning (AVX2/AVX-512/NEON). // SIMD intrinsics: unsafe permitted in this crate, audited per-function.

go get github.com/gomodul/packeddecimal

Protected evaluation toolkit for COBOL copybook analysis, EBCDIC conversion, packed decimal conversion and legacy/mainframe data reconciliation.

Benchmark harness for the gnucobol-rs hot path (cob_move COMP-3<->display) with a parity re-check after every run. ~95M records/sec baseline. Apache-2.0.

Verifiable COBOL record-decoding shim for data migration — decode copybook+record dumps byte-exactly via the oracle-proven gnucobol-rs courts. Apache-2.0.

GPU/CUDA-accelerated batch decoding of COBOL numeric fields (COMP-3/zoned) for high-throughput legacy-data ingest. Part of KOBOLD. Apache-2.0.

Operational corruption detection for fixed-record COBOL data: record-length anomaly, EBCDIC/ASCII-FTP transfer damage, zoned-sign damage, packed-decimal nibble validation, CR/LF injection, trailing-byte loss, and dirty-data triage.

faithful native rust forensic implementation of gnucobol