http://www.gnucap.com/dokuwiki/ 2026-04-16T07:56:53-05:00 FeedCreator 1.7.2-ppt DokuWiki 2015-12-11T15:39:55-05:00 2015-12-11T15:39:55-05:00 2015-12-11T15:39:55-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:ac_analysis?rev=1449869995&do=diff

Implementation AC analysis The AC functions in Gnucap correspond to a combination of the AC and PZ functions in Spice. Actually, they are more like the PZ functions, in the sense that frequency (SIM::jomega) is complex. void ac_iwant_matrix() Notify the sparse matrix of what nodes this device uses.

2026-02-09T09:55:35-05:00 2026-02-09T09:55:35-05:00 2026-02-09T09:55:35-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:allocation_and_setup?rev=1770652535&do=diff

Implementation Allocation and setup default constructor A default constructor is required. It is used to construct the static object that is registered with the dispatcher. It should do what a default constructor usually does. copy constructor A copy constructor is required. Most objects are created by the copy constructor, as copies of the object registered with the dispatcher. Usually, it should do a SHALLOW copy. In particular, a COMMON should be linked and not copied. A copy const…

2025-01-11T05:43:07-05:00 2025-01-11T05:43:07-05:00 2025-01-11T05:43:07-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:dc_and_transient_analysis?rev=1736595787&do=diff

Implementation DC and transient analysis void tr_iwant_matrix() Notify the sparse matrix of what nodes this device uses. Two matrices are used, “aa” and “lu”. The matrix “aa” is the nodal admittance matrix. The matrix “lu” is the LU factors of the admittance matrix. Both need to be notified, and have identical patterns.

2025-01-16T23:32:07-05:00 2025-01-16T23:32:07-05:00 2025-01-16T23:32:07-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:parameters?rev=1737091927&do=diff

Implementation Parameters These methods provide all access to parameters. Parameters are seen as strings in this context, because it is more flexible. Usually parameters are accessed by index, as if in an array. It is up to the implementer to decide what type of storage to actually use.

2024-12-13T04:47:37-05:00 2024-12-13T04:47:37-05:00 2024-12-13T04:47:37-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:ports?rev=1734086857&do=diff

Implementation Ports void set_port_by_name(std::string& name, std::string& value) Make a connection between a port and the rest of the circuit, by name as in Verilog. Usually this is not needed because the inherited method will do the right thing, which is to look up the index then do set_port_by_index.

2013-06-20T01:07:59-05:00 2013-06-20T01:07:59-05:00 2013-06-20T01:07:59-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:probes?rev=1371708479&do=diff

Implementation Probes double tr_probe_num(const std::string&)const This function returns a probe value for DC, OP, and transient analysis, selected by a string argument. Any state variable or parameter may be selected. Usually the code consists of a string of if - elseif statements. If none match, in most cases it should call BASE::tr_probe_num and return its result.

2015-12-11T15:39:55-05:00 2015-12-11T15:39:55-05:00 2015-12-11T15:39:55-05:00 http://www.gnucap.com/dokuwiki/doku.php/gnucap:manual:tech:plugins:devices:query?rev=1449869995&do=diff

Implementation Simple query functions Used by parser int max_nodes()const Return the maximum number of ports, from the viewpoint of the parser, including both voltage ports and current ports. Usually it returns a constant. int min_nodes()const Return the minimum number of ports, from the viewpoint of the parser, including both voltage ports and current ports. Usually it is the same as max_nodes.