Precompute power+exponent for iterative conversion

The maximum power of the base that can fit into a given data type is
constant. There's no point in computing it at runtime, if we can just
store it in a compile-time constants array.

The code isn't the most beautiful, but that's mostly because Rust const
functions are still a bit limited.
One function was duplicated, because it was easy to get a slow version
to compile in const context, and const context doesn't really care...

0 files changed, 0 insertions, 0 deletions