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

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] sci-libs/alglib-4.07.0:0/4.07::gentoo  USE="-test" 4097 KiB

Total: 1 package (1 new), Size of downloads: 4097 KiB