https://manpages.ubuntu.com/manpages/xenial/man3/F77_dtpsv.3.html
Ubuntu Manpage: c_dblas2.c
ubuntumanpagec
https://manpages.ubuntu.com/manpages/xenial/man3/F77_dtrsv.3.html
Ubuntu Manpage: c_dblas2.c
ubuntumanpagec
https://manpages.ubuntu.com/manpages/xenial/man3/F77_dspmv.3.html
Ubuntu Manpage: c_dblas2.c
ubuntumanpagec