File: t_math_divw.v

package info (click to toggle)
verilator 5.038-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 162,552 kB
  • sloc: cpp: 139,204; python: 20,931; ansic: 10,222; yacc: 6,000; lex: 1,925; makefile: 1,260; sh: 494; perl: 282; fortran: 22
file content (141 lines) | stat: -rw-r--r-- 8,013 bytes parent folder | download | duplicates (2)
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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2004 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/);

   // verilator lint_off WIDTH

   //============================================================

   reg   bad;
   initial begin
      bad=0;
      c96(96'h0_0000_0000_0000_0000,    96'h8_8888_8888_8888_8888,      96'h0_0000_0000_0000_0000,      96'h0);
      c96(96'h8_8888_8888_8888_8888,    96'h0_0000_0000_0000_0000,      96'h0_0000_0000_0000_0000,      96'h0);
      c96(96'h8_8888_8888_8888_8888,    96'h0_0000_0000_0000_0002,      96'h4_4444_4444_4444_4444,      96'h0);
      c96(96'h8_8888_8888_8888_8888,    96'h0_2000_0000_0000_0000,      96'h0_0000_0000_0000_0044,      96'h0_0888_8888_8888_8888);
      c96(96'h8_8888_8888_8888_8888,    96'h8_8888_8888_8888_8888,      96'h0_0000_0000_0000_0001,      96'h0);
      c96(96'h8_8888_8888_8888_8888,    96'h8_8888_8888_8888_8889,      96'h0_0000_0000_0000_0000,      96'h8_8888_8888_8888_8888);
      c96(96'h1_0000_0000_8eba_434a,    96'h0_0000_0000_0000_0001,      96'h1_0000_0000_8eba_434a,      96'h0);

      c96(96'h0003,                     96'h0002,                       96'h0001,                       96'h0001);
      c96(96'h0003,                     96'h0003,                       96'h0001,                       96'h0000);
      c96(96'h0003,                     96'h0004,                       96'h0000,                       96'h0003);
      c96(96'h0000,                     96'hffff,                       96'h0000,                       96'h0000);
      c96(96'hffff,                     96'h0001,                       96'hffff,                       96'h0000);
      c96(96'hffff,                     96'hffff,                       96'h0001,                       96'h0000);
      c96(96'hffff,                     96'h0003,                       96'h5555,                       96'h0000);
      c96(96'hffff_ffff,                96'h0001,                       96'hffff_ffff,                  96'h0000);
      c96(96'hffff_ffff,                96'hffff,                       96'h0001_0001,                  96'h0000);
      c96(96'hfffe_ffff,                96'hffff,                       96'h0000_ffff,                  96'hfffe);
      c96(96'h1234_5678,                96'h9abc,                       96'h0000_1e1e,                  96'h2c70);
      c96(96'h0000_0000,                96'h0001_0000,                  96'h0000,                       96'h0000_0000);
      c96(96'h0007_0000,                96'h0003_0000,                  96'h0002,                       96'h0001_0000);
      c96(96'h0007_0005,                96'h0003_0000,                  96'h0002,                       96'h0001_0005);
      c96(96'h0006_0000,                96'h0002_0000,                  96'h0003,                       96'h0000_0000);
      c96(96'h8000_0001,                96'h4000_7000,                  96'h0001,                       96'h3fff_9001);
      c96(96'hbcde_789a,                96'hbcde_789a,                  96'h0001,                       96'h0000_0000);
      c96(96'hbcde_789b,                96'hbcde_789a,                  96'h0001,                       96'h0000_0001);
      c96(96'hbcde_7899,                96'hbcde_789a,                  96'h0000,                       96'hbcde_7899);
      c96(96'hffff_ffff,                96'hffff_ffff,                  96'h0001,                       96'h0000_0000);
      c96(96'hffff_ffff,                96'h0001_0000,                  96'hffff,                       96'h0000_ffff);
      c96(96'h0123_4567_89ab,           96'h0001_0000,                  96'h0123_4567,                  96'h0000_89ab);
      c96(96'h8000_fffe_0000,           96'h8000_ffff,                  96'h0000_ffff,                  96'h7fff_ffff);
      c96(96'h8000_0000_0003,           96'h2000_0000_0001,             96'h0003,                       96'h2000_0000_0000);

      c96(96'hffff_ffff_0000_0000,      96'h0001_0000_0000,             96'hffff_ffff,                  96'h0000_0000_0000);
      c96(96'hffff_ffff_0000_0000,      96'hffff_0000_0000,             96'h0001_0001,                  96'h0000_0000_0000);
      c96(96'hfffe_ffff_0000_0000,      96'hffff_0000_0000,             96'h0000_ffff,                  96'hfffe_0000_0000);
      c96(96'h1234_5678_0000_0000,      96'h9abc_0000_0000,             96'h0000_1e1e,                  96'h2c70_0000_0000);

      c96(96'h0000_0000_0000_0000,      96'h0001_0000_0000_0000,        96'h0000,                       96'h0000_0000_0000_0000);
      c96(96'h0007_0000_0000_0000,      96'h0003_0000_0000_0000,        96'h0002,                       96'h0001_0000_0000_0000);
      c96(96'h0007_0005_0000_0000,      96'h0003_0000_0000_0000,        96'h0002,                       96'h0001_0005_0000_0000);
      c96(96'h0006_0000_0000_0000,      96'h0002_0000_0000_0000,        96'h0003,                       96'h0000_0000_0000_0000);
      c96(96'h8000_0001_0000_0000,      96'h4000_7000_0000_0000,        96'h0001,                       96'h3fff_9001_0000_0000);
      c96(96'hbcde_789a_0000_0000,      96'hbcde_789a_0000_0000,        96'h0001,                       96'h0000_0000_0000_0000);
      c96(96'hbcde_789b_0000_0000,      96'hbcde_789a_0000_0000,        96'h0001,                       96'h0000_0001_0000_0000);
      c96(96'hbcde_7899_0000_0000,      96'hbcde_789a_0000_0000,        96'h0000,                       96'hbcde_7899_0000_0000);
      c96(96'hffff_ffff_0000_0000,      96'hffff_ffff_0000_0000,        96'h0001,                       96'h0000_0000_0000_0000);
      c96(96'hffff_ffff_0000_0000,      96'h0001_0000_0000_0000,        96'hffff,                       96'h0000_ffff_0000_0000);
      c96(96'h7fff_8000_0000_0000,      96'h8000_0000_0001,             96'h0000_fffe,                  96'h7fff_ffff_0002);
      c96(96'h8000_0000_fffe_0000,      96'h8000_0000_ffff,             96'h0000_ffff,                  96'h7fff_ffff_ffff);
      c96(96'h0008_8888_8888_8888_8888, 96'h0002_0000_0000_0000,        96'h0004_4444,                  96'h0000_8888_8888_8888);

      if (bad) $stop;
      $write("*-* All Finished *-*\n");
      $finish;
   end

   task c96;
      input [95:0] u;
      input [95:0] v;
      input [95:0] expq;
      input [95:0] expr;
      c96u( u, v, expq, expr);
      c96s( u, v, expq, expr);
      c96s(-u, v,-expq,-expr);
      c96s( u,-v,-expq, expr);
      c96s(-u,-v, expq,-expr);
   endtask

   task c96u;
      input [95:0] u;
      input [95:0] v;
      input [95:0] expq;
      input [95:0] expr;
      reg [95:0]   gotq;
      reg [95:0]   gotr;
      gotq = u/v;
      gotr = u%v;
      if (gotq != expq && v!=0) begin
         bad = 1;
      end
      if (gotr != expr && v!=0) begin
         bad = 1;
      end
      if (bad
`ifdef TEST_VERBOSE
          || 1
`endif
          ) begin
         $write(" %x /u %x = got %x exp %x  %% got %x exp %x", u,v,gotq,expq,gotr,expr);
         // Test for v=0 to prevent Xs causing grief
         if (gotq != expq && v!=0) $write(" BADQ");
         if (gotr != expr && v!=0) $write(" BADR");
         $write("\n");
      end
   endtask

   task c96s;
      input signed [95:0] u;
      input signed [95:0] v;
      input signed [95:0] expq;
      input signed [95:0] expr;
      reg signed [95:0]   gotq;
      reg signed [95:0]   gotr;
      gotq = u/v;
      gotr = u%v;
      if (gotq != expq && v!=0) begin
         bad = 1;
      end
      if (gotr != expr && v!=0) begin
         bad = 1;
      end
      if (bad
`ifdef TEST_VERBOSE
          || 1
`endif
          ) begin
         $write(" %x /s %x = got %x exp %x  %% got %x exp %x", u,v,gotq,expq,gotr,expr);
         // Test for v=0 to prevent Xs causing grief
         if (gotq != expq && v!=0) $write(" BADQ");
         if (gotr != expr && v!=0) $write(" BADR");
         $write("\n");
      end
   endtask

endmodule