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Tests: $countbits

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This commit is contained in:
Wilson Snyder 2020-10-28 07:39:13 -04:00
parent 23140aeff0
commit f670eccf8c
1 changed files with 10 additions and 0 deletions
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10
test_regress/t/t_math_countbits.v
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@ -56,6 +56,8 @@ module t(/*AUTOARG*/
result_70_3 = $countbits(in70, ctrl0, ctrl1, ctrl2);
end
logic [31:0] val = 32'h70008421;
integer cyc=0;
// Test loop
always @ (posedge clk) begin
@ -70,6 +72,14 @@ module t(/*AUTOARG*/
if ($countbits(20'b1100x01z101, 2, 2'bx1) != 18) $stop;
if ($countbits(32'b1100x01z101, 'x, 'z) != 2) $stop;
if ($countbits(32'b1100x01z101, 'x, 'z, '1) != 7) $stop;
`ifndef VERILATOR // Unsup
if ($countbits(val, '1) != 7) $stop;
if ($countones(val) != 7) $stop;
if ($countbits(val, '0) != 25) $stop;
if ($countbits(val, '0, '1) != 32) $stop;
if ($countbits(val, 'x, 'z) != 0) $stop;
`endif
end
else if (cyc == 1) begin
in16 <= 16'h0AF0;