[Numpy-discussion] ANN: numarray-0.3

Todd Miller jmiller at stsci.edu
Tue Mar 12 14:21:02 CST 2002


 Numarray 0.3
------------
Numarray is a Numeric replacement which features c-code generated from
python template scripts, the capacity to operate directly on arrays in
files, and improved type promotion semantics.

Numarray-0.3 incorporates safety checks to prevent crashing Python
when a user accidentally changes private variables in numarray.

The new safety checks ensure that:

1. Numarray C-functions are called with properly sized buffers.
2. Numarray C-functions are called with properly aligned buffers.
3. Parameters match the C-function in count and i/o direction.
4. The correct generic function wrapper is used to call each C-function.
5. All indices implied by the array strides are valid.

Failed checks result in python exceptions.

A new memory object fixes an unforunate limitation of the python
buffer object, namely the lack of guaranteed double aligned storage.

The largest generated source module, _ufuncmodule.c, has been
partitioned by data type into several smaller, more gcc-friendly
modules, e.g. _ufuncFloat64module.c.

The sort and argsort functions are fixed.
The dot function is fixed for 1D arrays.
Transpose, swapaxes, and reshape once again return views.

WHERE
-----------
Numarray-0.3 windows executable installers and source code tar ball is 
here:

http://sourceforge.net/project/showfiles.php?group_id=1369

Numarray is hosted by Source Forge in the same project which hosts Numeric:

http://sourceforge.net/projects/numpy/

The web page for Numarray information is at:

http://stsdas.stsci.edu/numarray/index.html

Trackers for Numarray Bugs, Feature Requests, Support, and Patches are at
the Source Forge project for NumPy at:

http://sourceforge.net/tracker/?group_id=1369

REQUIREMENTS
--------------------------

numarray-0.3 requires Python 2.0 or greater.


AUTHORS, LICENSE
------------------------------

Numarray was written by Perry Greenfield, Rick White, Todd Miller, JC
Hsu, Paul Barrett, and Phil Hodge at the Space Telescope Science
Institute.  Numarray is made available under a BSD-style License.  See
LICENSE.txt in the source distribution for details.


-- 
Todd Miller             jmiller at stsci.edu <mailto:jmiller at stsci.edu> 
<mailto:jmiller at stsci.edu>
STSCI / SSG            (410) 338 4576


-- 
Todd Miller 			jmiller at stsci.edu
STSCI / SSG			(410) 338 4576






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