NAME

       DPGEN_SHIFT - Shifter Macro-Generator

SYNOPSIS

       #include  <genlib.h>

       void GENLIB_MACRO (DPGEN_SHIFT, char *modelname, long flags, long N);

DESCRIPTION

       Generate a N bits shifter with name modelname.

       How it works :

       • if the op[0] signal is set to '1' performs a right shift, performs a left shift otherwise.

       • if  the  op[1]  signal  is  set to '1' performs an arithmetic shift (only meaningful in case of a right
         shift).

       • shamt : specifies the shift amount. The width of this signal (Y) is computed from the operator's  width
         : Y = ceil(log2(N)) - 1.

   TERMINAL NAMES
       1. op : select the kind of shift (input, 2 bit).

       2. shamt : the shift amount (input, Y bits).

       3. i : value to shift (input, N bits).

       4. o : output (N bits).

       5. vdd : power.

       6. vss : ground.

EXAMPLE

       GENLIB_MACRO(DPGEN_SHIFT, "model_shift_32",
                                 F_BEHAV|F_PLACE,
                                 32);

       GENLIB_LOINS("model_shift_32",
                    "instance1_shift_32",
                    "op[1:0]",
                    "shamt[4:0]",
                    "x[31:0]",
                    "y[31:0]",
                    "vdd", "vss", NULL);

SEE ALSO

       GENLIB_MACRO(3), genlib(1)

ASIM/LIP6                                         30 July 2004                                    DPGEN_SHIFT(3)