Transforms certain real non-symmetric tridiagonal matrix to symmetric tridiagonal matrix. Classes : D4c1c . Standardize matrix eigenvalue problem Type : Fortran subroutine in EISPACK package. Access : Public domain. Portable. Precision: Double. Note : Implementations vary among sites. Usage : CALL FIGI(NM, N, T, D, E, E2, IERR) Details : Fullsource Source Sites : (1) ARNO (2) NETLIB
ARNO: Silicon Graphics Origin 2000, National Institute of Standards and Technology (NIST), Gaithersburg, MD. Available to NIST staff. Precision: Double. Note : Single precision version obtained by prepending s to name in call. Those logged in to arno.nist.gov or amur.nist.gov may access this module as follows. Access : f77 -o prog prog.f -lcomplib.sgimath Documentation: man figi
NETLIB: Public access repository, The University of Tennessee at Knoxville and Bell Laboratories Precision: Double. Note : Single precision version available in NETLIB package SEISPACK. You may access components from NETLIB outside GAMS as follows. Source : echo "send only figi from eispack" | mail netlib@ornl.gov Fullsource : echo "send figi from eispack" | mail netlib@ornl.gov
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