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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] sci-libs/tnt-3.0.12::gentoo  49 KiB
[ebuild  N     ] sci-libs/jama-1.2.5-r1::gentoo  USE="-doc" 16 KiB

Total: 2 packages (2 new), Size of downloads: 65 KiB