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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] sci-libs/openlibm-0.8.7:0/4::gentoo  USE="-static-libs" 366 KiB
[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] dev-libs/openspecfun-0.5.5::gentoo  119 KiB

Total: 3 packages (3 new), Size of downloads: 485 KiB