File: t_math_divw.v

package info (click to toggle)
verilator 4.038-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 29,596 kB
  • sloc: cpp: 90,585; perl: 15,101; ansic: 8,573; yacc: 3,626; lex: 1,616; makefile: 1,101; sh: 175; python: 145
file content (146 lines) | stat: -rw-r--r-- 6,097 bytes parent folder | download
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
142
143
144
145
146
// 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*/
   // Inputs
   clk
   );

   input clk;

   // 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