proj is a program/library for geographic coordinate transforms. There is a new version in wip/proj, 6.3.0. (This is not yet in pkgsrc proper because of compat issues with programs that depend on proj, but that's orthogonal to this message.)
proj can use extra data files, but test vectors are without, so one runs proj tests as make PKG_OPTIONS.proj=-proj-grids test Through 6.2.1, this passed, and 6.3.0 has new tests and new reliance on some C99 math. Now, the "geodtest" program fails, with wrong calculation results. This is on netbsd-8/amd64. On 8/i386 I get the same failures, but not quite the same wrong value in one test. paranoia is ok, but that doesn't test the math functions in question. These tests pass on Linux, and proj's CI also successfully tests on FreeBSD 11, MSVC 2015 & 2017 and MacOSX. That doesn't 100% prove this is a NetBSD bug, but it's quite strong fingerpointing. I built with (in wip/proj/Makefile) CFLAGS+= -DHAVE_C99_MATH=0 which causes src/geodesic.c to replace some C99 functions, and then the tests pass. I hope I am not the math expert at the moment! I will test on 8/earmv7hf-el. I will see if bisecting on the various "if c99, use it, otherwise use this replacement" stanzas is useful. I am curious about test results from 9 or current, or other architectures. I also wonder if anyone knows of C99 math test suites. Thanks, Greg
