Log Message:
Update to 3.2.1, provided by outpaddling and asau in wip.

libctl 3.2.1

8 August 2012

    Fix incorrect gh_symbol2newstr macro replacement.

libctl 3.2

20 July 2012

    Now works with Guile version 2.x (older versions are still
    supported).
    Add libctl_quiet variable to main.c so that libctl-using programs
    can suppress all output if desired (e.g. to avoid duplicate
    outputs on parallel machines).
    Added wedge object type for circular/cylindrical wedges, as a
    subclass of cylinder: (make wedge (center ...) (axis ...)
    (radius ...) ...) with two new properties: (wedge-angle ...)
    for the angle in radians, and (wedge-start v) for a vector v
    such that the wedge angles start at zero in the (v, axis) plane.
    [Caveat: subpixel averaging is currently inaccurate for the
    flat wedge edges.]
    list-type constructors now accept either (name ...elements...)
    or (name (list ...elements...)).
    Add vector3->exact function for to-integer rounding. Otherwise,
    ensure that interpolation results are floating-point to prevent
    type-conversion errors.
    Added ctl-set-prompt! to set interactive prompt in both old
    and new Guile versions.
    Rename string to char* in ctl-io.h for C++ compatibility.
    Bug fix in normal-to-object near corners of blocks.

libctl 3.1

5 June 2008

    Support specifying the location of the guile and guile-config
    programs with GUILE and GUILE_CONFIG environment variables in
    the configure script.
    Support for calling NLopt optimization library (also requires
    the program using libctl to be changed to link nlopt).
    New ellipsoid_overlap_with_object function, analogous to
    box_overlap_with_object function.
    Bug fix in include function for recent versions of Guile, to
    properly keep track of the current include directory.
    Bug fix in numerical-derivative routine, which didn't converge
    when the error was exactly zero.

libctl 3.0.3

27 February 2008

    Added "begin-timed" function, which is similar to \ 
"begin-time"
    except that it returns the value of the last statement (like
    "begin") rather than the time.
    Bug fix: allow classes to have boolean properties.
    Bug fixes for compilation under C++, thanks to David Foster:
    include missing string.h header and fixed gh_new_procedure
    prototype.

libctl 3.0.2

22 August 2006

    Fix minor Guile incompatibility on some systems.

libctl 3.0.1

5/1/2006

    Change shared-library version to 3:0:0 instead of 0:0:0. This
    avoids conflicts with shared library version numbers that has
    been assigned to earlier versions of libctl for Debian; thanks
    to Josselin Mouette for the suggestion.

libctl 3.0

4/1/2006

    Switch to use automake and libtool. Can now install shared
    libraries with --enable-shared.
    License is now GNU GPL (v2 or later) rather than the GNU LGPL,
    due to use of third-party GPL code for multi-dimensional
    integration (below).
    gen-ctl-io now supports separate generation of code and header
    files via --code and --header arguments. (Better for parallel
    make.) Also support a -o option to give a different output file
    name.
    gen-ctl-io can now export C++ code by using the --cxx flag.
    gen-ctl-io can now export SWIG .i files for automatic type
    conversion in SWIG wrapper generation, using the --swig flag.
    Backwards incompatible change: users must include their own
    ctl-io.h *before* ctlgeom.h, or you get ctlgeom-types.h instead
    (this is for use with the "stand-alone" libctlgeom.a library
    below.
    New multi-dimensional integration routines using adaptive
    cubature. (Much more efficient than nested 1d integrations.)
    Adapted in part from the HIntlib Library by Rudolf Schuerer
    and from the GNU Scientific Library (GSL) by Brian Gough.
    New interpolate-uniform function that tries to maintain a
    uniform distance between points (i.e. variable number of
    interpolated points between different list elements, as needed).
    Now install a "stand-alone" libctlgeom.a library to make it
    easier to call geometry routines from non-Scheme code.
    New routines to compute overlap fraction of box with object,
    compute analytical normal vectors, etcetera. (For upcoming
    versions of Meep and MPB.) Also new routines to get the object
    of a point, not just the material. Also new routines to operate
    on a supplied geometry list parameter instead of using the
    global; unlike the old material_of_point_in_tree functions,
    these functions do not shift the argument to the unit cell,
    but you can use the new function shift_to_unit_cell to get this
    behavior.
    gen-ctl-io now generates object equal/copy functions.
    In unit-vector3, only return 0 when norm==0, not merely if it
    is small.
    Added one-sided numerical derivative routine.
    Define "verbose?" variable corresponding to main.c variable.
    (print) calls (flush-all-ports) to keep C and Scheme I/O in
    sync.
    Fix in find-root-deriv to prevent infinite loop in some cases
    where the root does not exist; thanks to XiuLun Yang for the
    bug report.
    Bug fix in make_hermitian_cmatrix3x3; thanks to Mischa Megens.