Original link: OpenBLAS 0.3.29 Brings Auto-Detection For Intel Granite Rapids, Apple M4 & AMD Zen 5 / Phoronix.
BLAS is from 1979. Back then all Fortran code. Later came optimized assembler.
It is used in almost all scientific number crunching. Most common LAPACK. But in recent years also NumPy.
OpenBLAS is an open source implementation of the API. And it has actually more C code than Fortran code.