LOG2_INVERSE       71 maint/gnulib/lib/log2.c     return (double) e + log (y) * LOG2_INVERSE;
LOG2_INVERSE       81 maint/gnulib/lib/log2f.c     return (float) e + logf (y) * LOG2_INVERSE;
LOG2_INVERSE       81 maint/gnulib/lib/log2l.c     return (long double) e + logl (y) * LOG2_INVERSE;