devernay/cminpack v1.3.14

cminpack 1.3.14

on GitHub

Fixes spurious make check / CI failures on the intensive driver tests (#78).

On the difficult Moré/Garbow/Hillstrom problems, iteration counts and last
digits differ between compilers because of floating-point contraction (FMA),
even though every problem still converges. The non-portable
driver-vs-reference comparison was dropped from make check; driver validation
is now an informational cross-check of how the pure-C, f2c and FORTRAN
implementations compare. The pass/fail gates are the standard example tests and
the driver smoke tests.

• Replace examples/crosscheck.sh with examples/crosscheck.py (no /bin/sh
  dependency); add examples/compare.py and examples/driver_check.py. Wire an
  informational cross-check into CMake/CTest via the CMINPACK_CROSSCHECK
  option. Python 3 is optional in both build systems: when absent only the
  cross-check is skipped, with a disclaimer.
• Fix a compile error in examples/tenorm_.c (pass dpmpar_ its index by
  pointer, the FORTRAN/f2c calling convention).
• Document the numerical differences from FORTRAN MINPACK and the test setup in
  the README and HTML docs; correct the enorm.c comments (the divergence is
  FMA, not the rdwarf/rgiant scaling constants).

Full changelog: v1.3.13...v1.3.14