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@c -*-texinfo-*- |
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@c This is part of the GNU Guile Reference Manual. |
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@c Copyright (C) 1996, 1997, 2000, 2001, 2002, 2003, 2004, 2007 |
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@c Free Software Foundation, Inc. |
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@c See the file guile.texi for copying conditions. |
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@node SLIB |
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@section SLIB |
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@cindex SLIB |
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SLIB is a portable library of Scheme packages which can be used with |
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Guile and other Scheme implementations. SLIB is not included in the |
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Guile distribution, but can be installed separately (@pxref{SLIB |
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installation}). It is available from |
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@url{http://people.csail.mit.edu/jaffer/SLIB.html}. |
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After SLIB is installed, the following Scheme expression must be |
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executed before the SLIB facilities can be used: |
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@lisp |
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(use-modules (ice-9 slib)) |
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@end lisp |
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@findex require |
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@noindent |
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@code{require} can then be used in the usual way (@pxref{Require,,, |
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slib, The SLIB Manual}). For example, |
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@example |
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(use-modules (ice-9 slib)) |
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(require 'primes) |
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(prime? 13) |
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@result{} #t |
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@end example |
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A few Guile core functions are overridden by the SLIB setups; for |
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example the SLIB version of @code{delete-file} returns a boolean |
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indicating success or failure, whereas the Guile core version throws |
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an error for failure. In general (and as might be expected) when SLIB |
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is loaded it's the SLIB specifications that are followed. |
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@menu |
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* SLIB installation:: |
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* JACAL:: |
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@end menu |
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@node SLIB installation |
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@subsection SLIB installation |
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The following procedure works, e.g., with SLIB version 3a3 |
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(@pxref{Installation, SLIB installation,, slib, The SLIB Portable Scheme |
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Library}): |
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@enumerate |
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@item |
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Unpack SLIB and install it using @code{make install} from its directory. |
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By default, this will install SLIB in @file{/usr/local/lib/slib/}. |
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Running @code{make install-info} installs its documentation, by default |
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under @file{/usr/local/info/}. |
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@item |
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Define the @code{SCHEME_LIBRARY_PATH} environment variable: |
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@example |
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$ SCHEME_LIBRARY_PATH=/usr/local/lib/slib/ |
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$ export SCHEME_LIBRARY_PATH |
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@end example |
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Alternatively, you can create a symlink in the Guile directory to SLIB, |
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e.g.: |
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@example |
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ln -s /usr/local/lib/slib /usr/local/share/guile/@value{EFFECTIVE-VERSION}/slib |
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@end example |
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@item |
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Use Guile to create the catalog file, e.g.,: |
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@example |
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guile> (use-modules (ice-9 slib)) |
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guile> (require 'new-catalog) |
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guile> (quit) |
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@end example |
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The catalog data should now be in |
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@file{/usr/local/share/guile/@value{EFFECTIVE-VERSION}/slibcat}. |
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If instead you get an error such as: |
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@example |
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Unbound variable: scheme-implementation-type |
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@end example |
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then a solution is to get a newer version of Guile, |
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or to modify @file{ice-9/slib.scm} to use @code{define-public} for the |
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offending variables. |
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@end enumerate |
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@node JACAL |
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@subsection JACAL |
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@cindex JACAL |
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@cindex Jaffer, Aubrey |
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@cindex symbolic math |
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@cindex math -- symbolic |
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Jacal is a symbolic math package written in Scheme by Aubrey Jaffer. |
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It is usually installed as an extra package in SLIB. |
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You can use Guile's interface to SLIB to invoke Jacal: |
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@lisp |
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(use-modules (ice-9 slib)) |
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(slib:load "math") |
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(math) |
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@end lisp |
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@noindent |
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For complete documentation on Jacal, please read the Jacal manual. If |
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it has been installed on line, you can look at @ref{Top, , Jacal, jacal, |
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JACAL Symbolic Mathematics System}. Otherwise you can find it on the web at |
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@url{http://www-swiss.ai.mit.edu/~jaffer/JACAL.html} |
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@c Local Variables: |
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@c TeX-master: "guile.texi" |
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@c End: |
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