Complex sentence: The current LAPACK + + (versions 1.9 onwards) is a fork from the original LAPACK + +, with extensive fixes and changes, such as more wrapper functions for LAPACK and BLAS routines.
Split into simpler sentences: The current LAPACK + + (versions 1.9 onwards) started of as a fork from the original LAPACK + +. There are extensive fixes and changes, such as more wrapper functions for LAPACK and BLAS routines.