NAME

       GENLIB_DEF_PHSC - load a netlist and open a layout model as current figure

SYNOPSYS

       #include <genlib.h>
       void GENLIB_DEF_PHSC(cellname)
       char ∗cellname;

PARAMETERS

       cellname            Name  of the netlist figure to be looked for in memory or on disk, for
                           futher physical placement.

DESCRIPTION

       DEF_PHSC defines the current working figure by  it's  name,  the  cellname  argument,  for
       layout  and  netlist  operations.   It can be use anywhere in the genlib program, but must
       appear at least once at the top of it, since it  also  initalize  the  user's  preferences
       through environment variables.
       DEF_PHSC looks for the netlist figure cellname in memory, and if not found, on disk. If it
       fails, an error occurs and the process terminates.
       The main issue of this function is to allow the netlist and  physical  descriptions  of  a
       circuit in two separate files, for standard cell approach. So there is no need to recreate
       the netlist view each time the placement changes.
       If the physical figure called cellname doesn't exists in memory, it  is  created.   If  it
       already  exists  in memory, it makes it the current working figure.  DEF_PHSC doesn't look
       on disk for the figure cellname, so be careful not to overwrite  an  existing  file  while
       saving later on.

EXAMPLE

       #include <genlib.h>
       main()
       {
            /∗ Create a figure to work on  ∗/
            GENLIB_DEF_PHSC("mycell");
            /∗ Place an instance ∗/
            GENLIB_SC_PLACE("instance", NOSYM,0L,0L);
            /∗ Save all that on disk ∗/
            GENLIB_SAVE_PHSC();
       }

SEE ALSO

       genlib(1), GENLIB_SAVE_PHSC(3), GENLIB_SC_PLACE(3), GENLIB_SC_TOP(3), GENLIB_SC_BOTTOM(3),
       GENLIB_SC_LEFT(3), GENLIB_SC_RIGHT(3).