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+LAPACK provides routines for solving systems of simultaneous linear
+equations, least-squares solutions of linear systems of equations,
+eigenvalue problems, and singular value problems.
+
+Install an optimized BLAS instead of the reference BLAS from Netlib if you
+wish to improve LAPACK's performance. Otherwise, use the BLAS build script
+provided at Slackbuilds.org. You may also build your own tuned lapack library
+with ATLAS.
+
+This requires blas.