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MPE_Draw_logic - Sets logical operation for laying down new pixels
int MPE_Draw_logic( graph, function )
graph - MPE graphics handle
- integer specifying one of the following:
MPE_LOGIC_COPY - no logic, just copy the pixel
MPE_LOGIC_XOR - xor the new pixel with the existing one and many
more... see mpe_graphics.h
NOTES FOR FORTRAN INTERFACE
The Fortran interface to this routine is different from its C
counterpart and it has an additional argument, ierr, at the end of the
argument list, i.e. the returned function value (the error code) in C
interface is returned as the additional argument in Fortran interface.
The Fortran interface is invoked with the CALL statement.
All MPI and MPE objects, MPI_Comm, MPE_XGraph and MPE_Color, are of
type INTEGER in Fortran.