Add C API interface #3
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Bug fixed: memory leak
Unify `solve_lp_problem` API to return `cupdlpx_result_t*`
Added C API section with example for solving LPs.
ZedongPeng
reviewed
Sep 19, 2025
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Do we really want to upload this file to GitHub? This is already the test/test.sh file. Maybe merge these two?
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These two tests are not the same: one runs from bash and reads an MPS file, while the other directly passes in coefficients. They exercise different code paths (file I/O parsing vs. API interface), so both are valuable to keep.
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Summary
This PR introduces a new C API interface (
interface.c/interface.h) that allows users to directly construct and solve LPs from in-memory data structures, without requiring MPS files.Key Changes
interface.candinterface.h:make_problem_from_matrix(...)for constructing LP problems from dense/CSR/CSC/COO matrices.solve_lp_problem(...)for solving the constructed problems with optional custom PDHG parameters.README.md:test/that demonstrates solving a toy LP using the interface.