https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-c/2023-2/cblas-rotmg.html
cblas_?rotmg
Computes the parameters for a modified Givens rotation.
cblasrotmg
https://anticosmic.blogspot.com/
Anticosmic RotMG
Realm of the Mad God
anticosmicrotmg
https://www.intel.com/content/www/us/en/docs/onemkl/developer-reference-fortran/2025-2/rotmg.html
?rotmg
Computes the parameters for a modified Givens rotation.
rotmg