Changes between Version 18 and Version 19 of WikiStart


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Timestamp:
05/13/11 15:34:39 (3 years ago)
Author:
rtoy
Comment:

Add some old news

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  • WikiStart

    v18 v19  
    1616== News ==
    1717
     18Here is brief summary of some recent changeds.  Check the
     19[http://trac.common-lisp.net/oct/timeline wiki timeline] for more
     20detailed information of changes.
     21
    1822 * 2011-03
    1923   * Documentation for functions added.
     
    2125   * Added implementation of theta functions.
    2226
    23 Check the [http://trac.common-lisp.net/oct/timeline wiki timeline] for
    24 more detailed information of changes.
    25  
     27 * 2011-02-09
     28   * For Lisp's that support signed zeros for floating point (like
     29     cmucl and sbcl), Oct now correctly handles signed quad-double
     30     zeroes.
     31   * The CVS repository has been moved to Git. The CVS repository is
     32     still available but will not be updated. Use Git to obtain the
     33     latest versions. (See Oct gitweb for more links.)
     34
     35 * 2007-11-28
     36   * Oct now passes all of the tests on Allegro/x86. The main change
     37     was not to compile with safety 0. This messes up Allegro's
     38     tracking of the precision.
     39   * To help implementations (like Allegro or Clisp) that use arrays
     40     for storing %quad-double numbers, many functions now support an
     41     optional third arg which is where the result should be
     42     written. This is like how bit-and works. This should work
     43     correctly with both an array or (complex double-double-float)
     44     implementation, but perhaps some care is needed to make sure it
     45     works for both.
     46   * CMUCL can use either an array or a (complex double-double-float)
     47     to store a %quad-double. However, simple timing measurements
     48     indicate that arrays are slightly slower to much slower than
     49     using (complex double-double-float).
     50
     51 * 2007-10-26
     52   * A Pade approximation for exp has been added. This is currently
     53     not used, but tests show that it is 25% faster than the current
     54     method, but it loses about 3 bits of precision. This was
     55     contributed by Richard Fateman.
     56
     57 * 2007-10-15
     58   * The {{{OCT}}} package has been renamed. The package is now
     59     {{{NET.COMMON-LISP.OCT}}}, with a nickname of {{{OCT}}}.
     60   * {{{QD}}} is no longer a nickname for {{{OCT}}}.
     61   * {{{QUAD-DOUBLE-INTERNAL}}} has been renamed to
     62     {{{OCT-INTERNAL}}}, with a nickname of {{{OCTI}}}. The old
     63     nickname {{{QDI}}} has been removed
     64   * Oct has a more accurate argument reduction for the trig
     65     functions. This allows Oct to compute {{{cos(2^120)}}} correctly
     66     (which is about -0.925879).
     67
     68 * 2007-10-10
     69   * Oct now has print/read consistency, thanks to Richard Fateman,
     70     who provided a very nice method to convert bignums to
     71     quad-double.
     72
    2673== Supported Lisps ==
    2774