CLUMP_EXP_NUMBITS
DECLARE_BITMAP(bits, CLUMP_EXP_NUMBITS);
bitmap_zero(bits, CLUMP_EXP_NUMBITS);
for_each_set_clump8(start, clump, bits, CLUMP_EXP_NUMBITS)
expect_eq_clump8(start, CLUMP_EXP_NUMBITS, clump_exp, &clump);