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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/maloc-1.5-r1::gentoo  USE="-doc -mpi" 776 KiB
[ebuild  N     ] sci-libs/gamer-1.5-r2::gentoo  USE="-doc" 4133 KiB

Total: 2 packages (2 new), Size of downloads: 4909 KiB