f2c'd BLAS wrapper

The f2c translated BLAS interfaces used by CLAPACK (and other f2c'd codes) unfortunately often don't quite match the Fortran interfaces on various platforms. Consequently, it is difficult to use f2c'd codes with high performance BLAS routines, which may substantially impede the performance of these codes. These simple wrappers provide a way around this difficulty by providing f2c style interfaces (preceded with "f2c_" to avoid name collisions) that call through to an underlying CBLAS or F77 BLAS.

David Bindel (dbindel@cs.berkeley.edu)