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# There are four packages in the ITPACK directory for solving # large sparse linear systems by iterative methods: ITPACK 2C (single # precision), ITPACK 2C (double precision), ITPACKV 2D (a vectorized # version of ITPACK 2C for the Cray Y-MP and similar vector computers), # and NSPCG. ITPACK 2C and ITPACKV 2D are intended for symmetric and # positive-definite matrix problems. NSPCG has preconditioners and # polynomial accelerators for nonsymmetric matrix problems as well. # Only single precision versions are available for ITPACKV 2D # and NSPCG. Machine-dependent constants and the timing function may # need to be modified by the user when installing the packages for a # particular computer. They are located in routines DFAULT and TIMER in # all four packages. file dsrc2c.f for ITPACK 2C source code prec double gams d2b4 size 302 kB file dtst2c.f for testing routine for ITPACK 2C prec double file info.tex for information about CNA iterative packages lang LaTeX file nspcg1.f for NSPCG source code, part 1 gams d2a4, d2b4 size 270 kB file nspcg2.f for NSPCG source code, part 2 gams d2a4, d2b4 size 216 kB file nspcg3.f for NSPCG source code, part 3 gams d2a4, d2b4 size 303 kB file nspcg4.f for NSPCG source code, part 4 gams d2a4, d2b4 size 279 kB file nspcg5.f for NSPCG source code, part 5 gams d2a4, d2b4 file quick.tex for Quick Reference Guide for NSPCG (formatted with LaTeX) file src2c.f for ITPACK 2C source code prec single gams d2b4 size 301 kB file srcv2d.f for ITPACKV 2D source code (vectorized for Cray Y-MP) gams d2b4 size 230 kB file tst2c.f for testing routine for s.p. ITPACK 2C file tstnsp1.f for testing program 1 for NSPCG file tstnsp2.f for testing program 2 for NSPCG file tstnsp3.f for testing program 3 for NSPCG file tstnsp4.f for testing program 4 for NSPCG file tstnsp5.f for testing program 5 for NSPCG file tstv2d.f for testing routine for ITPACKV 2D file user2c.tex for ITPACK 2C User's Guide lang LaTeX file usernsp.tex for NSPCG User's Guide lang LaTeX size 208 kB file userv2d.tex for ITPACKV 2D User's Guide lang LaTeX