BELOW IS A LISTING OF THE INPUT/OUTPUT FILES WHICH ARE ACCESSED BY THE REAL SYMMETRIC LANCZOS EIGENVALUE PROGRAM, LEVAL. INCLUDED ALSO IS A SAMPLE OF THE INPUT FILE WHICH LEVAL REQUIRES ON FILE 5. THE PARAMETER SUPPLIED IN THIS FILE ARE IN FREE FORMAT. FILE 8 CONTAINS THE DATA FOR THE REAL SYMMETRIC NXN MATRIX A. LEVAL COMPUTES EVS OF REAL SYMMETRIC MATRICES ON USER-SPECIFIED INTERVALS. SAMPLE DEFINITIONS OF THE INPUT/OUTPUT FILES FOR LEVAL ------------------------------------------------------------------ LEVAL EXEC LANCZOS EIGENVALUE CALCULATION REAL SYMMETRIC MATRICES FI 06 TERM FILEDEF 1 DISK &1 NHISTORY A (RECFM F LRECL 80 BLOCK 80 FILEDEF 2 DISK &1 HISTORY A (RECFM F LRECL 80 BLOCK 80 FILEDEF 3 DISK &1 GOODEV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 4 DISK &1 ERRINV A (RECFM F LRECL 80 BLOCK 80 FILEDEF 5 DISK LEVAL INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 8 DISK &1 INPUT A (RECFM F LRECL 80 BLOCK 80 FILEDEF 11 DISK &1 DISTINCT A (RECFM F LRECL 80 BLOCK 80 LOAD LEVAL LESUB LEMULT ------------------------------------------------------------------- SAMPLE INPUT FILE FOR LEVAL ------------------------------------------------------------------- LANCZOS EIGENVALUE COMPUTATIONS, NO REORTHOGONALIZATION TEST MATRIX LINE 1 N KMAX NMEVS MATNO 143 429 1 706830 LINE 2 SVSEED RHSEED MXINIT MXSTUR 7892713 147935 5 100000 LINE 3 ISTART ISTOP 0 1 LINE 4 IHIS IDIST IWRITE 1 0 1 LINE 5 RELTOL (RELATIVE TOLERANCE IN 'COMBINING' GOODEV) .0000000001 LINE 6 MB(1) MB(2) MB(3) MB(4) (ORDERS OF T(1,MEV)) 190 LINE 7 NINT (NUMBER OF SUB-INTERVALS FOR BISEC) 1 LINE 8 LB(1) LB(2) LB(3) (INTERVAL LOWER BOUNDS) 0.0 LINE 9 UB(1) UB(2) UB(3) (INTERVAL UPPER BOUNDS) 1.001 -----------------------------------------------------------------