LOG2_BY_256 92 maint/gnulib/lib/exp2.c double z = (x * 256.0 - nm) * (LOG2_BY_256 * 0.5); LOG2_BY_256 105 maint/gnulib/lib/exp2l.c long double z = (x * 256.0L - nm) * (LOG2_BY_256 * 0.5L);