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cg_clif uses libm functions for most non-trivial float operations rather than x86 SSE instructions. I suspect there is a (1ULP?) inaccuracy in FreeBSD's libm implementation. In the past the same kind of error happened with MinGW, but that seems to have fixed itself at one point.
Some float operations have a lower accuracy requirement (eg 1ULP) rather than the 1/2ULP accuracy requirement that basic math operations have. I don't know which operations have that though, but if dirichlet_stability uses one of these, FreeBSD is allowed to return this result and thus the test should be relaxed.
cg_clif uses libm functions for most non-trivial float operations rather than x86 SSE instructions. I suspect there is a (1ULP?) inaccuracy in FreeBSD's libm implementation. In the past the same kind of error happened with MinGW, but that seems to have fixed itself at one point.
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