Uses factorization of real positive definite matrix stored in packed form to compute its determinant and/or inverse. Classes : D2b1b . Solution of systems of linear equations, including matrix inverses, and LU and related factorizations (real symmetric positive definite matrices) D3b1b . Determinants of real symmetric positive definite matrices Type : Fortran subroutine in LINPACK package. Access : Public domain. Portable. Precision: Single. Usage : CALL SPPDI(AP, N, DET, JOB) See also : SPPCO SPPFA 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: Single. (Double: DPPDI) 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 sppdi
NETLIB: Public access repository, The University of Tennessee at Knoxville and Bell Laboratories Precision: Single. (Double: DPPDI) You may access components from NETLIB outside GAMS as follows. Source : echo "send only sppdi from linpack" | mail netlib@ornl.gov Fullsource : echo "send sppdi from linpack" | mail netlib@ornl.gov
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