1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2008 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
module t;
// Note $sscanf already tested elsewhere
reg [3:0] n;
reg [63:0] q;
reg [16*8:1] wide;
reg [8:1] ochar;
reg [48*8:1] str;
reg [48*8:1] str2;
string str3;
reg [39:0] instruction_str [1:0];
real r;
initial begin
n = 4'b1100;
q = 64'h1234_5678_abcd_0123;
wide = "hello-there12345";
$sformat(str, "n=%b q=%d w=%s", n, q, wide);
`ifdef TEST_VERBOSE $display("str=%0s",str); `endif
if (str !== "n=1100 q= 1311768467750060323 w=hello-there12345") $stop;
q = {q[62:0],1'b1};
$swrite(str2, "n=%b q=%d w=%s", n, q, wide);
`ifdef TEST_VERBOSE $display("str2=%0s",str2); `endif
if (str2 !== "n=1100 q= 2623536935500120647 w=hello-there12345") $stop;
str3 = $sformatf("n=%b q=%d w=%s", n, q, wide);
`ifdef TEST_VERBOSE $display("str3=%0s",str3); `endif
if (str3 !== "n=1100 q= 2623536935500120647 w=hello-there12345") $stop;
$swrite(str2, "e=%e", r);
$swrite(str2, "e=%f", r);
$swrite(str2, "e=%g", r);
str3 = "hello";
$swrite(str2, {str3, str3});
`ifdef TEST_VERBOSE $display("str2=%0s",str2); `endif
if (str2 !== "hellohello") $stop;
r = 0.01;
$swrite(str2, "e=%e f=%f g=%g", r, r, r);
`ifdef TEST_VERBOSE $display("str2=%0s",str2); `endif
if (str2 !== "e=1.000000e-02 f=0.010000 g=0.01") $stop;
$swrite(str2, "mod=%m");
`ifdef TEST_VERBOSE $display("str2=%0s",str2); `endif
if (str2 !== "mod=top.t") $stop;
$swrite(str2, "lib=%l");
`ifdef TEST_VERBOSE $display("chkl %0s",str2); `endif
if (str2 !== "lib=t") $stop;
str3 = $sformatf("u=%u", {"a","b","c","d"}); // Value selected so is printable
`ifdef TEST_VERBOSE $display("chku %s", str3); `endif
if (str3 !== "u=dcba") $stop;
str3 = $sformatf("v=%v", 4'b01xz); // Value selected so is printable
`ifdef TEST_VERBOSE $display("chkv %s", str3); `endif
str3 = $sformatf("z=%z", {"a","b","c","d"}); // Value selected so is printable
`ifdef TEST_VERBOSE $display("chkz %s", str3); `endif
$sformat(ochar,"%s","c");
if (ochar != "c") $stop;
$swrite(str2, 4'd12);
if (str2 != "12") $stop;
$swriteb(str2, 4'd12);
if (str2 != "1100") $stop;
$swriteh(str2, 4'd12);
if (str2 != "c") $stop;
$swriteo(str2, 4'd12);
if (str2 != "14") $stop;
str3 = "foo";
$sformat(str3, "%s", str3); // $sformat twice so verilator does not
$sformat(str3, "%s", str3); // optimize the call to $sformat(str3, "%s", "foo")
`ifdef TEST_VERBOSE $display("str3=%0s", str3); `endif
if (str3 != "foo") $stop;
$sformat(instruction_str[0], "%s", "Hello");
$sformat(instruction_str[1], "%s", "World");
if (instruction_str[0] != "Hello") $stop;
if (instruction_str[1] != "World") $stop;
$write("*-* All Finished *-*\n");
$finish;
end
endmodule
|
