add_big.cpp revision 12855:588919e0e4aa 
1/*****************************************************************************
2
3  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
4  more contributor license agreements.  See the NOTICE file distributed
5  with this work for additional information regarding copyright ownership.
6  Accellera licenses this file to you under the Apache License, Version 2.0
7  (the "License"); you may not use this file except in compliance with the
8  License.  You may obtain a copy of the License at
9
10    http://www.apache.org/licenses/LICENSE-2.0
11
12  Unless required by applicable law or agreed to in writing, software
13  distributed under the License is distributed on an "AS IS" BASIS,
14  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
15  implied.  See the License for the specific language governing
16  permissions and limitations under the License.
17
18 *****************************************************************************/
19
20/*****************************************************************************
21
22  add_big.cpp --
23
24  Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15
25
26 *****************************************************************************/
27
28/*****************************************************************************
29
30  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
31  changes you are making here.
32
33      Name, Affiliation, Date:
34  Description of Modification:
35
36 *****************************************************************************/
37
38// This may look like C code, but it is really -*- C++ -*-
39//
40// add_big.cxx --
41// Copyright Synopsys 1998
42// Author          : Ric Hilderink
43// Created On      : Fri Jan 15 12:35:43 1999
44// Status          : none
45//
46
47
48#define SC_INCLUDE_FX
49#include "systemc.h"
50
51
52#define SHOW(r, m) \
53out << r.to_string(SC_BIN) << " " << flush; \
54out << r.to_string(SC_HEX) << " " << flush; \
55out << m.to_string(SC_BIN) << " " << flush; \
56out << m.to_string(SC_HEX) << "\n" << flush
57
58
59#define BIG_ARROW(T_op)							      \
60{									      \
61  out << "______________________ " #T_op " ______________________\n";         \
62  out << "______________________ UP        ______________________\n";         \
63  sc_fxtype_params fooc(T_WL, T_IWL, SC_RND, SC_SAT);                        \
64  T_op m(1); \
65  T_op r(1); \
66  int i;								      \
67  for (i = 0; i < T_WL + 10; ++i)						      \
68    {									      \
69      r += r + (r >> 1);								      \
70      SHOW(r, m);							      \
71      m *= 16;								      \
72    }									      \
73  out << "______________________ DOWN      ______________________\n";         \
74  m = 1;								      \
75  for (i = 0; i < T_WL + 10; ++i)			                      \
76    {									      \
77      r -= m;								      \
78      SHOW(r, m);							      \
79      m *= 16;								      \
80    }									      \
81}
82
83#define T_FX_FLOAT  sc_fxval
84#define T_FX_UFIX   sc_ufix
85#define T_FX_FIX    sc_fix
86#define T_FX_FIXED  sc_fixed<T_WL, T_IWL>
87#define T_FX_UFIXED sc_ufixed<T_WL, T_IWL>
88
89#define THE_BIG_ARROW							      \
90BIG_ARROW(T_FX_FLOAT)							      \
91BIG_ARROW(T_FX_UFIX)							      \
92BIG_ARROW(T_FX_FIX)							      \
93BIG_ARROW(T_FX_FIXED)							      \
94BIG_ARROW(T_FX_UFIXED)
95
96
97void add_big(ostream& out)
98{
99  out.precision(15);
100
101#define T_WL 16
102#define T_IWL T_WL
103  out << "************* add_big " << T_WL << " ***************\n";
104  THE_BIG_ARROW;
105#undef T_WL
106#undef T_IWL
107#define T_WL 67
108#define T_IWL T_WL
109  out << "************* add_big " << T_WL << " ***************\n";
110  THE_BIG_ARROW;
111#undef T_WL
112#undef T_IWL
113#define T_WL 150
114#define T_IWL T_WL
115  out << "************* add_big " << T_WL << " ***************\n";
116  THE_BIG_ARROW;
117}
118