BLAS is a very well optimized library. I think a lot of it is in Fortran, which can be faster than c. It is very heavily used in scientific compute. BLAS also h

BLAS is a very well optimized library. I think a lot of it is in Fortran, which can be faster than c. It is very heavily used in scientific compute. BLAS also has methods that have been hand tuned in assembly. It’s not magic, but the amount of work that has gone into it is not something you would probably want to replicate.