These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libtommath-1.3.0::gentoo  USE="-doc -examples -static-libs" 628 KiB
[ebuild  N     ] dev-libs/libtompoly-0.04-r3::gentoo  168 KiB

Total: 2 packages (2 new), Size of downloads: 796 KiB