hs-strsv
a few strsv implementations in plain ol' haskell
for better implementations, see:
https://hackage.haskell.org/package/numeric-quest-0.2.0.2/docs/src/Orthogonals.html
other resources
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.296.7937&rep=rep1&type=pdf
https://users.umiacs.umd.edu/~hal/HBlas/index.html (uses _casm_)