Debian Patches

Status for ensmallen/3.11.1-2

Patch Description Author Forwarded Bugs Origin Last update
l1-constraint-excess-precision.patch L1Constraint::ProximalStep() re-projects onto a slightly smaller ball if floating-point error left the result outside the ball. With excess
floating-point precision (x87 on i386), newNorm can compare greater than
lambda while newLambda, once stored in a double, rounds back to lambda
exactly. The recursion then never makes progress and overflows the stack,
which caused SIGSEGV in the L1ConstraintProjectionTest and
FASTAWoodFunctionTest tests on i386. Force the new radius to be a few ULPs
of the element type smaller than the old one.

diff --git a/include/ensmallen_bits/fbs/l1_constraint_impl.hpp b/include/ensmallen_bits/fbs/l1_constraint_impl.hpp
index aff3ed2f..3b63241a 100644		 Barak A. Pearlmutter <bap@debian.org> yes

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