ChangeLog: https://github.com/devernay/cminpack/releases/tag/v1.3.13
* Fix a division by zero in covar1 when the Jacobian rank equals the number of
residuals (m == rank, e.g. square full-rank problems), which produced Inf/NaN
throughout the covariance matrix.
* Make the banded finite-difference branch of fdjac1 call the user function
with iflag=2, like the dense branch, fdjac2 and the FORTRAN version.
* Fix the USE_BLAS Newton correction in lmpar to use all n components (it was
truncated to the original Jacobian rank, giving a wrong step for
rank-deficient problems).
* Fix the jpvt memset size in the USE_LAPACK qrfac, and make the work-array
size checks in hybrd, hybrj, hybrd1, hybrj1 and lmdif1 overflow-safe (also in
the f2c versions).
* Guard a harmless transient infinity in dogleg for rank-deficient Jacobians
(also in the f2c version).
ChangeLog: https://github.com/devernay/cminpack/releases/tag/v1.3.12
* Fix non-convergence / NaN in lmder, lmdif and lmstr on problems whose
solution is the zero vector, by guarding a 0/0 division in lmpar (#76).
* Compare test output using a numeric tolerance instead of an exact text match,
so the tests pass across compilers and math libraries (#37, #77).
* Fix Windows linking: correct the DLL export/import macros and document that
static-library users define CMINPACK_NO_DLL (#18).
* Detect and link the CBLAS interface when USE_BLAS is enabled (#12).
* Add cminpackcpp.hpp, a header-only C++ wrapper so the solvers accept lambdas,
functors and std::function (#74).
* Make CMake the standard build system (the Makefile is kept for backward
compatibility) and reorganize the tree into include/ and src/ (with src/f2c/
for the f2c conversions); remove the unmaintained Xcode, Visual
Studio and Eclipse project files.
* Move CI to GitHub Actions (keeping the CMake-based AppVeyor build) and remove
the obsolete Travis CI, Coveralls and Coverity configuration and badges.
Fernando Apesteguía
95139f3929