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********************* IBIS GOLDEN PARSER BUG REPORT FORM *********************
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INSTRUCTIONS

To report a bug in the IBIS golden parser.  Please fill out the top part
of the following form and send the complete form to ibis-bug@eda.org.

A list of reported bugs will be maintained on eda.org.

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PARSER VERSION NUMBER: IBISCHK6 V6.1.0

PLATFORM (SPARC, HP700, PC, etc.): PC

OS AND VERSION: Windows 7

REPORTED BY: Bob Ross, Teraspeed Labs

DATE: November 27, 2015

DESCRIPTION OF BUG:

Package Model represented by [Capacitance Model] off diagonal entries must be
0.0 or negative.  Ibischk6 Version 6.1.0 does not issue an Error message.

A limit for 0.0 according to BUG168 is permissible regarding a "0.0 entry.

No Error is issued for the test case below



INSERT IBIS FILE DEMONSTRATING THE BUG:

==== bug169.pkg ====

[IBIS Ver]        3.2
[File Name]       bug169.pkg
[File Rev]        0
[Date]            0
|
| THIS TEST CASE IS STILL UNDER DEVELOPEMENt
|
[Package Model] bug169
|
[Define Package Model] bug169
[Manufacturer]  somebody
[OEM]           somebody
[Description]   for testing only
[Number Of Pins]          3 
|
[Pin Numbers]
1
2
3
|
[Model Data]
|
[Inductance Matrix]  Full_matrix
[Row]  1
6E-0   6E-011   6E-011
[Row]  2
6E-011   6E-011
[Row]  3
6E-011
|
[Capacitance Matrix]  Full_matrix
|
[Row]  1
|
|  ... need to report error for positive off-diagonal 1e-9
|
1.0000E-9    1E-9    0.0
[Row]  2
1E-9   0.0 
[Row]  3
0.0
|
[End Model Data]
[End Package Model] 
[End]


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******************** BELOW FOR ADMINISTRATION AND TRACKING *******************
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BUG NUMBER:                                                 169

SEVERITY: [FATAL, SEVERE, MODERATE, ANNOYING, ENHANCEMENT]  MODERATE

PRIORITY: [HIGH, MEDIUM, LOW]                               MEDIUM

STATUS: [OPEN, CLOSED, WILL NOT FIX, NOT A BUG]             CLOSED

FIXED VERSION:    6.1.1

FIXED DATE:       January 8, 2016

NOTES ON BUG FIX:
Classified at the December 18, 2015 IBIS Teleconference Meeting.
To be fixed in the next release of ibischk6.

January 5, 2016 - Note, the zero-valued diagonal, minimal value off-diagonal
case still generates an Error for very small off-diagonal values that might
have been created by model developer numerical precision issues, but this
is usually an unlikely case that can be easily fixed.


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