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// ============================================================================
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// ============================================================================
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//
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//
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module positCntlz(i, o);
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module positCntlz(i, o);
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parameter PSTWID = `PSTWID;
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parameter PSTWID = `PSTWID;
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input [PSTWID-2:0] i;
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input [PSTWID-2:0] i;
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output [$clog2(PSTWID-2):0] o;
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output [$clog2(PSTWID-1)-1:0] o;
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generate begin : gClz
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generate begin : gClz
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case(PSTWID)
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if (PSTWID <= 8)
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16: cntlz16 u1 (.i({i,1'b1}), .o(o));
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cntlz8 u1 (.i({i,{9-PSTWID{1'b1}}}), .o(o));
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20: cntlz24 u1 (.i({i,1'b1,4'hF}), .o(o));
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else if (PSTWID <= 16)
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32: cntlz32 u1 (.i({i,1'b1}), .o(o));
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cntlz16 u1 (.i({i,{17-PSTWID{1'b1}}}), .o(o));
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40: cntlz48 u1 (.i({i,1'b1,8'hFF}), .o(o));
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else if (PSTWID <= 24)
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52: cntlz64 u1 (.i({i,1'b1,12'hFFF}), .o(o));
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cntlz24 u1 (.i({i,{25-PSTWID{1'b1}}}), .o(o));
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64: cntlz64 u1 (.i({i,1'b1}), .o(o));
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else if (PSTWID <= 32)
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80: cntlz80 u1 (.i({i,1'b1}), .o(o));
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cntlz32 u1 (.i({i,{33-PSTWID{1'b1}}}), .o(o));
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default: ;
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else if (PSTWID <= 48)
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endcase
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cntlz48 u1 (.i({i,{49-PSTWID{1'b1}}}), .o(o));
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else if (PSTWID <= 64)
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cntlz64 u1 (.i({i,{65-PSTWID{1'b1}}}), .o(o));
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else if (PSTWID <= 80)
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cntlz80 u1 (.i({i,{81-PSTWID{1'b1}}}), .o(o));
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else if (PSTWID <= 96)
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cntlz96 u1 (.i({i,{97-PSTWID{1'b1}}}), .o(o));
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else if (PSTWID <= 128)
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cntlz128 u1 (.i({i,{129-PSTWID{1'b1}}}), .o(o));
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end
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end
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endgenerate
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endgenerate
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endmodule
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endmodule
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