32 lines
592 B
Coq
32 lines
592 B
Coq
|
// Check that unary real minus preserves the sign of zero.
|
||
|
|
|
||
|
|
module test;
|
||
|
|
|
||
|
|
reg failed;
|
||
|
|
real zero;
|
||
|
|
real result;
|
||
|
|
|
||
|
|
`define check(val, exp) \
|
||
|
|
if (val !== exp) begin \
|
||
|
|
$display("FAILED(%0d). '%s' expected %h, got %h", `__LINE__, \
|
||
|
|
`"val`", exp, val); \
|
||
|
|
failed = 1'b1; \
|
||
|
|
end
|
||
|
|
|
||
|
|
initial begin
|
||
|
|
failed = 1'b0;
|
||
|
|
zero = 0.0;
|
||
|
|
|
||
|
|
result = -zero;
|
||
|
|
`check($realtobits(result), 64'h8000000000000000);
|
||
|
|
|
||
|
|
result = -result;
|
||
|
|
`check($realtobits(result), 64'h0000000000000000);
|
||
|
|
|
||
|
|
if (!failed) begin
|
||
|
|
$display("PASSED");
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
endmodule
|