sci The Linear Algebra PACKage (LAPACK) is a comprehensive library that does linear algebra operations including matrix inversions, least squared solutions to linear sets of equations, eigenvector analysis, singular value decomposition, etc. It is a very comprehensive and reputable package that has found extensive use in the scientific community. This package installs the reference FORTRAN 77 implementation from Netlib for LAPACK and optionnally the one for the Basic Linear Algebra Subprogram (BLAS). Build the 64 bits integer library Build LAPACK with extra precision (needs sci-libs/xblas)