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preliminary conversion for size casts

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This commit is contained in:
Zachary Snow
2019-09-18 23:39:09 -04:00
parent df3620d3a0
commit ba4cf805ff
6 changed files with 206 additions and 5 deletions
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test/basic/cast.sv
+23
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@@ -0,0 +1,23 @@
module top;
initial begin
logic [31:0] w = 1234;
int x = -235;
int y = 1234;
logic [4:0] z = y;
$display("%0d %0d", w, 5'(w));
$display("%0d %0d", x, 5'(x));
$display("%0d %0d", y, 5'(y));
$display("%0d %0d", z, 5'(z));
$display("%0d %0d", w+1, 5'(w+1));
$display("%0d %0d", x+1, 5'(x+1));
$display("%0d %0d", y+1, 5'(y+1));
$display("%0d %0d", z+1, 5'(z+1));
$display("%b %b", w, 40'(w));
$display("%b %b", x, 40'(x));
$display("%b %b", y, 40'(y));
$display("%b %b", z, 40'(z));
end
localparam bit foo = '0;
localparam logic [31:0] bar = 32'(foo);
initial $display("%b %b", foo, bar);
endmodule
test/basic/cast.v
+27
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@@ -0,0 +1,27 @@
module top;
initial begin : foo_block
reg [31:0] w;
reg signed [31:0] x;
reg signed [31:0] y;
reg [4:0] z;
w = 1234;
x = -235;
y = 1234;
z = y;
$display("%0d %0d", w, w[4:0]);
$display("%0d %0d", x, $signed(x[4:0]));
$display("%0d %0d", y, $signed(y[4:0]));
$display("%0d %0d", z, z[4:0]);
$display("%0d %0d", w+1, w[4:0]+1);
$display("%0d %0d", x+1, $signed(x[4:0])+1);
$display("%0d %0d", y+1, $signed(y[4:0])+1);
$display("%0d %0d", z+1, z[4:0]+1);
$display("%b %b", w, {8'b0, w});
$display("%b %b", x, {8'hFF, x});
$display("%b %b", y, {8'b0, y});
$display("%b %b", z, {35'b0, z});
end
localparam foo = 0;
localparam [31:0] bar = 32'b0;
initial $display("%b %b", foo, bar);
endmodule