[P0556R3](https://wg21.link/P0556R3) `<bit>` `ispow2()`, `ceil2()`, `floor2()`, `log2p1()` [P1355R2](https://wg21.link/P1355R2) Narrow Contract For `ceil2()` This may need compiler support. **NOTE:** These functions were renamed. See #554.
P0556R3
<bit>ispow2(),ceil2(),floor2(),log2p1()P1355R2 Narrow Contract For
ceil2()This may need compiler support.
NOTE: These functions were renamed. See #554.