Excellent! This look very useful...
Edward
At 10:49 AM 12/22/2005 -0700, Michael J Wirthlin wrote:
In honor of the BYU-Cal football game tonight (Las Vegas Bowl), I thought
I would send an email summarizing the changes I made (here at BYU) to the
FixPoint infrastructure:
ptolemy.math.Precision.java
- Provide support for unsigned FixPoint values
- Modify the way Precision is represented internally
(sign, bits, exponent offset)
- Provide 4 String representations of a given precision
(including ability to parse and recognize the appropriate
precision format)
"3.2" (integer.fraction)
"5/3" (length/integer)
"2:-2" (vhdl)
"5e-2" (length e exponent)
FixPoint.java
- Provide "lossless" arithmetic operators. These operators
will generate FixPoint results that "grow" if overflow occurs.
- Provide quantized versions of these operators. Quantization
is a parameter for each operator.
Changes were also made to the following classes to support the modified
FixPoint strategy:
Overflow.java
Rounding.java
Quantization.java
FixPointQuantization.java
If you have any questions or comments on the changes, feel free to
discusss them.
- Mike
--
Michael J. Wirthlin
Associate Professor
Electrical and Computer Engineering Voice: (801) 422-7601
Brigham Young University Fax: (801) 422-0201
459 Clyde Building Email: [EMAIL PROTECTED]
Provo, UT 84602 www.ee.byu.edu/faculty/wirthlin
----------------------------------------------------------------------------
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
------------
Edward A. Lee
Professor, Chair of the EE Division, Associate Chair of EECS
231 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
----------------------------------------------------------------------------
Posted to the ptolemy-hackers mailing list. Please send administrative
mail for this list to: [EMAIL PROTECTED]
