NEWS

ECOSolveR 0.6.2 (2026-10-16)

Fix wrong mixed-integer solutions from ECOS_csolve() with boolean variables on platforms where char is unsigned (Linux aarch64). Reported by the r-devel linux-arm64 checks.

Fix UBSan error (misaligned pointer from REAL() on zero-length vector) in build_result() when no equality constraints are present (p = 0). Reported by CRAN M1 SAN checks.
Add multi-step solver lifecycle API: ECOS_setup(), ECOS_solve(), ECOS_update(), and ECOS_cleanup() allow re-solving problems with changed numerical data (same sparsity structure) without repeating symbolic analysis. Workspace held in an external pointer with GC finalizer; user data vectors are duplicated to prevent corruption from ECOS in-place equilibration.
Switch R-level error messaging from stop() to cli::cli_abort() with inline markup ({.arg}, {.cls}, {.code}, {.field}). The cli package is now in Imports.
Add lifecycle tests (10 tests covering setup, solve, update, cleanup, and helper functions).

Switch ECOS submodule to fork (bnaras/ecos, r-patches branch); remove ecos-2954b2a-changes/ overlay and simplify Makevars.
Fix copy-paste bug in A matrix validation (inherits(G,...) was used instead of inherits(A,...)).
Enable dimension consistency check (sum(q) + l + 3*e == nrow(G)).
Signal an R error instead of returning silent NULL when ECOS_setup or ECOS_BB_setup fails.
Fix R_init function name to match package name (R_init_ECOSolveR).
Narrow import(methods) to importFrom(methods, as).
C solver fixes: wright omega Taylor series bug, NULL dereference and memory leaks in ECOS_BB, integer truncation in pfloat rounding, missing include guards, printf replaced with Rprintf.
Cherry-pick upstream NaN bail-out (PR #181) and ECOS_updateData NULL-safety fix (PR #185) from ECOS develop branch.
Add unit tests for ecos.control, make_csc_matrix, dimension validation, and plain-matrix A handling. Fix test-bb.R to namespace-qualify Matrix::sparseMatrix.

Address the issue caused by Matrix 1.3.x: Force coercion to "dgCMatrix" if not so. Make corresponding change in vignette.

Fix compilation issue on Ubuntu by modifying Makevars and Makevars.win to use Rscript call to R.home() to figure out include path. (Issue 5)

ECOS source fix for header glblopts.h that defined ECOS_NAN using portable R version R_NaN and R_PosInf. This caused the convolution example in CVXR package to fail on 32-bit platforms.
Added a convolution test to be specific.

ECOS update: Synced underlying library to version 2.0.7.
Removed import of Matrix package, added slam interface, contributions from Florian Schwendinger.
Tests: Added a number of unit tests based on base C library.