157 lines
3.0 KiB
Verilog
157 lines
3.0 KiB
Verilog
// Check that the signedness of methods on the built-in enum type is handled
|
|
// correctly when calling the method without parenthesis.
|
|
|
|
module test;
|
|
|
|
bit failed = 1'b0;
|
|
|
|
`define check(x) \
|
|
if (!(x)) begin \
|
|
$display("FAILED(%0d): ", `__LINE__, `"x`"); \
|
|
failed = 1'b1; \
|
|
end
|
|
|
|
int unsigned x = 10;
|
|
int y = 10;
|
|
int z;
|
|
|
|
enum shortint {
|
|
A = -1,
|
|
B = -2,
|
|
C = -3
|
|
} es;
|
|
|
|
enum bit [15:0] {
|
|
X = 65535,
|
|
Y = 65534,
|
|
Z = 65533
|
|
} eu;
|
|
|
|
initial begin
|
|
es = B;
|
|
eu = Y;
|
|
|
|
// These all evaluate as signed
|
|
`check($signed(eu.first) < 0)
|
|
`check(es.first < 0)
|
|
|
|
`check($signed(eu.last) < 0)
|
|
`check(es.last < 0)
|
|
|
|
`check($signed(eu.prev) < 0)
|
|
`check(es.prev < 0)
|
|
|
|
`check($signed(eu.next) < 0)
|
|
`check(es.next < 0)
|
|
|
|
// These all evaluate as unsigned
|
|
`check(eu.first > 0)
|
|
`check({es.first} > 0)
|
|
`check($unsigned(es.first) > 0)
|
|
`check(es.first > 16'h0)
|
|
|
|
`check(eu.last > 0)
|
|
`check({es.last} > 0)
|
|
`check($unsigned(es.last) > 0)
|
|
`check(es.last > 16'h0)
|
|
|
|
`check(eu.prev > 0)
|
|
`check({es.prev} > 0)
|
|
`check($unsigned(es.prev) > 0)
|
|
`check(es.prev > 16'h0)
|
|
|
|
`check(eu.next > 0)
|
|
`check({es.next} > 0)
|
|
`check($unsigned(es.next) > 0)
|
|
`check(es.next > 16'h0)
|
|
|
|
// In arithmetic expressions if one operand is unsigned all operands are
|
|
// considered unsigned
|
|
z = eu.first + x;
|
|
`check(z === 65545)
|
|
z = eu.first + y;
|
|
`check(z === 65545)
|
|
|
|
z = eu.last + x;
|
|
`check(z === 65543)
|
|
z = eu.last + y;
|
|
`check(z === 65543)
|
|
|
|
z = eu.prev + x;
|
|
`check(z === 65545)
|
|
z = eu.prev + y;
|
|
`check(z === 65545)
|
|
|
|
z = eu.next + x;
|
|
`check(z === 65543)
|
|
z = eu.next + y;
|
|
`check(z === 65543)
|
|
|
|
z = es.first + x;
|
|
`check(z === 65545)
|
|
z = es.first + y;
|
|
`check(z === 9)
|
|
|
|
z = es.last + x;
|
|
`check(z === 65543)
|
|
z = es.last + y;
|
|
`check(z === 7)
|
|
|
|
z = es.prev + x;
|
|
`check(z === 65545)
|
|
z = es.prev + y;
|
|
`check(z === 9)
|
|
|
|
z = es.next + x;
|
|
`check(z === 65543)
|
|
z = es.next + y;
|
|
`check(z === 7)
|
|
|
|
// For ternary operators if one operand is unsigned the result is unsigend
|
|
z = x ? eu.first : x;
|
|
`check(z === 65535)
|
|
z = x ? eu.first : y;
|
|
`check(z === 65535)
|
|
|
|
z = x ? eu.last : x;
|
|
`check(z === 65533)
|
|
z = x ? eu.last : y;
|
|
`check(z === 65533)
|
|
|
|
z = x ? eu.prev : x;
|
|
`check(z === 65535)
|
|
z = x ? eu.prev : y;
|
|
`check(z === 65535)
|
|
|
|
z = x ? eu.next : x;
|
|
`check(z === 65533)
|
|
z = x ? eu.next : y;
|
|
`check(z === 65533)
|
|
|
|
z = x ? es.first : x;
|
|
`check(z === 65535)
|
|
z = x ? es.first : y;
|
|
`check(z === -1)
|
|
|
|
z = x ? es.last : x;
|
|
`check(z === 65533)
|
|
z = x ? es.last : y;
|
|
`check(z === -3)
|
|
|
|
z = x ? es.prev : x;
|
|
`check(z === 65535)
|
|
z = x ? es.prev : y;
|
|
`check(z === -1)
|
|
|
|
z = x ? es.next : x;
|
|
`check(z === 65533)
|
|
z = x ? es.next : y;
|
|
`check(z === -3)
|
|
|
|
if (!failed) begin
|
|
$display("PASSED");
|
|
end
|
|
end
|
|
|
|
endmodule
|