NAME

       GENLIB_DEF_AB - define a new abutment box to the current layout cell

SYNOPSYS

       #include <genlib.h>
       void GENLIB_DEF_AB(dx1, dy1, dx2, dy2);
       long dx1, dy1, dx2, dy2;

PARAMETERS

       dx1, dy1            Values  to  be added to the lower left corner of the previous abutment
                           box

       dx2, dy2            Values to be added to the upper right corner of the previous  abutment
                           box

DESCRIPTION

       DEF_AB  give  a  new  abutment  box  to the current physical cell.  The coordinates of the
       abutment box are the coordinates of the envelop of the abutment  boxes  of  each  instance
       plus  the  delta values given as argument. The (dx1, dy1) values are added to the (x1, y1)
       coordinates of the bottom left corner of the "standard abutment box"  (the  envelop),  and
       the  (dx2,  dy2)  are  added to the top right ones.  You have to call this function before
       saving, otherwise the figure will not have an  abutment  box.  Since  it's  regarding  the
       abutment  box  of its model that an instance is placed, any futher use of this figure will
       be incorrect if DEF_AB isn't called, or properly defined.

ERRORS

       "GENLIB_DEF_AB impossible : missing GENLIB_DEF_PHFIG"
              No figure has been yet specified by a call to DEF_PHFIG. So it  isn't  possible  to
              give it a size.  you must call DEF_PHFIG before any other layout action.

EXAMPLE

       #include <genlib.h>
       main()
       {
            /∗ Create a figure to work on  ∗/
            GENLIB_DEF_PHFIG("cell");
            /∗ Place an instance ∗/
            GENLIB_PLACE("model","i1", NOSYM,0L,0L);
            GENLIB_PLACE("model","i2", NOSYM,120L,40L);
            GENLIB_DEF_PHINS("i1");
            GENLIB_PLACE_TOP("model2", "i3", NOSYM);
            /∗ define the new abutment box as the standard envelop ∗/
            GENLIB_DEF_AB(0, 0, 0, 0);
            /∗ Save all that on disk ∗/
            GENLIB_SAVE_PHFIG();
       }

SEE ALSO

       genlib(1), GENLIB_SAVE_PHFIG(3).