A library interface for Bernd Souvignier's code

[rlm]

All within one process, no files written to or read from:

        sage: from sage.quadratic_forms import isoautom
        sage: s = """#1
        ... 3x0
        ... 2
        ... 0 3
        ... 0 0 5
        ... 3x0
        ... 5
        ... 0 3
        ... 0 0 1
        ... """
        sage: x = isoautom.call_main_isom(['isom'], s)
        sage: x
        'The lattices are not isomorphic !\nDifferent numbers of short vectors (5|2)\n'
        sage: s = """#1
        ... 3x0
        ... 1
        ... 0 3
        ... 0 0 5
        ... 3x0
        ... 5
        ... 0 3
        ... 0 0 1
        ... """
        sage: x = isoautom.call_main_isom(['isom'], s)
        sage: x
        '3\n  0  0  1\n  0  1  0\n  1  0  0\n'
        sage: print x
        3
          0  0  1
          0  1  0
          1  0  0

[rlm]

This patch is only a first step. We need to create the 'dependencies.h' file, replace the load/dump file function with a structure which lets us interface directly, write the wrappers, etc...

[rlm]

New patch lets you give an input string to the isom function, and gives a string as output. Still rudimentary, but a proof of concept. Be careful calling it on invalid input, I haven't really worried about that yet.

[jonhanke]

Minor update to the previous filei, fixing the doctest quotes.

[jdemeyer]

Invalid since this is an interface to an old package without copyright information and the functionality is provided by PARI anyway (but not yet exposed to Sage).