wtf is testcov-lapack-script?

This repository contains a shell script for generating test coverage reports from LAPACK, a widely used numerical linear algebra library. In plain terms, it helps developers see which parts of the math library's code are actually tested by the existing test suite and which parts are skipped. At a high level, the script automates a process that would otherwise be tedious to do by hand. It runs the test suite for LAPACK while monitoring which lines of code are touched, then produces a report showing the results. Shell scripts are essentially recipe-like instruction files that tell the computer what commands to run in sequence, so this tool mostly handles the setup and execution of coverage-tracking software rather than doing heavy analysis itself. The people most likely to use this are developers or researchers who maintain or depend on LAPACK and want to gauge how reliable their test suite is. For example, if a team is updating LAPACK's code to add new features or fix bugs, they would want confidence that their tests actually exercise the changed code. Running this script gives them a map of where their tests fall short, so they know where to add more. The README does not go into detail beyond the fact that the script exists, so there is no further documentation on specific options, dependencies, or output formats. Because it is a shell script, it is lightweight and meant to be run in a Unix-like environment, but exactly which coverage tool it relies on and how to interpret the results are things a user would need to discover by reading the script itself.