libgcc-math/README

   1 This directory contains parts of the GLIBC package, which are not part of GCC
   2 but shipped with GCC as a convenience.  This includes the files in the flt-32
   3 and dbl-64 directories which are imported from the GLIBC sysdeps/ieee754
   4 versions.  Changes to these parts of libgcc-math should be done upstream in
   5 GLIBC and then re-imported to libgcc-math.
   6