Source files from Chapter 8

All files in this directory were
linted, compiled, and tested under:
    Borland C++ 4.0 (large memory model)
    Microsoft Visual C++ 1.5 (small memory model)
    Watcom C 10.0 (extended DOS)
    UnixWare 2.0 (SVR4)

        calcmain.c (listing 8-1)
        longmath.c (listing 8-2 through 8-19)
        longmath.h (listing 8-20)
        sqrtmain.c (listing 8-21)
        amrtmain.c (listing 8-22)

    When compiling a driver and the library of longmath
    functions that appear in longmath.c, it is *important*
    to make sure that MAX_SIZE is #defined for the same
    number of digits of precision in both the driver and
    the library. To aid in this, makefiles for the three
    drivers are included. The makefiles are written for
    Borland C compilers using large memory models. However,
    they are heavily commented and easily ported to other
    compilers. The files are:

        calcmain.mak
        sqrtmain.mak
        amrtmain.mak

    Also included are a number of small script files to
    test the longmath calculator. These files have the
    extension of .scr
	
	Update: The multiplication routine had an error, which
	has been fixed. Thanks to Peter Gold in New Zealand for
	reporting the error.

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