pounce-nl 0.4.0

AMPL .nl reader, reverse-mode AD tape, and TNLP evaluator for pounce
Documentation

AMPL .nl reader, reverse-mode AD tape, and TNLP evaluator.

This crate holds the .nl pipeline that used to live in pounce-cli:

  • [nl_reader] parses a .nl file into an [nl_reader::NlProblem] (the Expr DAG, linear parts, bounds, names, starting point) and provides [nl_reader::NlTnlp], a [pounce_nlp::tnlp::TNLP] implementation that evaluates objective/gradient/Hessian and constraints/Jacobian.
  • [nl_tape] flattens an Expr DAG into a reverse-mode AD tape with colored forward-over-reverse Hessian products.
  • [nl_external] supports AMPL imported (external) functions via the funcadd_ASL ABI.
  • [nl_fbbt_translate] lowers an Expr to an FbbtTape for feasibility-based bound tightening.

It is a leaf crate (depends only on pounce-common and pounce-nlp) so both the CLI and the Python bindings can read and evaluate .nl models without depending on each other.