XSETFLOAT        2608 src/alloc.c          XSETFLOAT (val, float_free_list);
XSETFLOAT        2622 src/alloc.c          XSETFLOAT (val, &float_block->floats[float_block_index]);
XSETFLOAT        5529 src/alloc.c      XSETFLOAT (new, p);