10-12-2011
difference bewteen pipe, xargs, and exec
I have read several docs on these on the web and looked at examples. I can't figure out the difference. In some cases you use one or the other or you combine them.
can someone help me understand this?
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LEARN ABOUT MINIX
genlib_def_phsc
GENLIB_DEF_PHSC.3(October 1, 1997) GENLIB_DEF_PHSC.3(October 1, 1997)
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;
ORIGIN
This software belongs to the ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
Paris, France.
Web : http://asim.lip6.fr/recherche/alliance/
E-mail : alliance-users@asim.lip6.fr
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 termi-
nates.
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).
BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory.
We need your feedback to improve documentation and tools.
PROCEDURAL GENERATION LANGUAGE
ASIM/LIP6 GENLIB_DEF_PHSC.3(October 1, 1997)