This version of the README.TXT file has been modified by Alan Miller
to apply to the ELF90-commpatible version.

This directory contains FORTRAN 90 code for computing Pade'-Hermite and
simultaneous Pade' approximants, plus two driver programs.  To obtain a run,
first compile the code in the file
            vec_pade.f90
Then compile & link with either driver1.f90 or driver2.f90

driver1.f90:
First driver program for vec_pade.f90.  It also gives code for computing
the inverse of a Striped Sylvester matrix using the formula derived in
sylvester_inverses.ps.Z.  No input data is required by this driver.
Contains the programs:
        main
        invert_sylv
        solve_sylv
        divide_series:

driver2.f90:
Second driver program for vec_pade.f90. It also gives code for computing
the errors in the order conditions for the Pade'-Hermite and
simultaneous Pade' systems computed by VECTOR_PADE.  This driver does require
input data, a sample of which is given in the file data2.
Contains the programs:
        main
        build_delta_t
        build_delta_t_star

vec_pade.f90:
Based on the algorithm given in stable_pade_alg.ps.Z and used for the
experiments described in experiments_pade_alg.ps.Z: Contains the subroutines:
        vector_pade:
        build_t:
        build_t_star:
        build_s:
        build_s_star:
        scale_s:
        scale_s_star:
        mult_s
        mult_s_star
        norm:
        gen_next_vector:
