There's a lot of activity for D in this area. For instance, there's a BLAS replacement[1] with good performance. Supporting numerical programming is a priority for Walter and Andrei. There's more work to do, but it is adding enough functionality that it will be a realistic option for those that like the language.

[1] http://blog.mir.dlang.io/glas/benchmark/openblas/2016/09/23/...