range_fx.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  range_fx.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// range_fx.cxx --
41// Copyright Synopsys 1998
42// Author          : Ric Hilderink
43// Created On      : Mon Jan 11 13:03:27 1999
44// Status          : none
45//
46
47
48#include <limits.h>
49#define SC_INCLUDE_FX
50#define SC_FXVAL_IMPLICIT_FXVAL
51#include "systemc.h"
52
53#define T_FX_FLOAT  sc_fxval
54#define T_FX_UFIX   sc_ufix
55#define T_FX_FIX    sc_fix
56#define T_FX_FIXED  sc_fixed<222,111>
57#define T_FX_UFIXED sc_ufixed<222,111>
58
59#define RANGE_TO_MIN(FX_TTT) \
60{									      \
61  FX_TTT x(1); \
62  FX_TTT d(1); \
63									      \
64  int i;								      \
65  for (i = 0; i < 300; ++i)						      \
66    {									      \
67      d = d / 2;							      \
68      x += d;								      \
69      out << i << " " << d.to_double() << " " << x.to_double() << " " << x.to_string(SC_BIN, SC_E) << "\n"; \
70    }									      \
71}
72
73
74#define RANGE_MIN_MAX(FX_TTT) \
75{									      \
76  FX_TTT x(1); \
77  FX_TTT d(4); \
78  FX_TTT e(0.125);                                                           \
79  int i;								      \
80  for (i = 0; i < 300; ++i)						      \
81    {									      \
82      d = d * 2;							      \
83      e = e / 2;                                                              \
84      x += d + e;							      \
85      out << i << " " << d.to_double() << " " << x.to_double() << " " << x.to_string(SC_BIN, SC_E) << "\n"; \
86    }									      \
87  for (i = 0; i < 300; ++i)						      \
88    {									      \
89      x -= (d + e);							      \
90      out << i << " " << d.to_double() << " " << x.to_double() << " " << x.to_string(SC_BIN, SC_E) << "\n"; \
91      d = d / 2;							      \
92      e = e * 2;                                                              \
93    }									      \
94}
95
96#define RANGE_TO_MAX(FX_TTT) \
97{									      \
98  FX_TTT x(1); \
99  FX_TTT d(1); \
100  int i;								      \
101  for (i = 0; i < 300; ++i)						      \
102    {									      \
103      d = d * 2;							      \
104      x += d;								      \
105      out << i << " " << d.to_double() << " " << x.to_double() << " " << x.to_string(SC_BIN, SC_E) << "\n"; \
106    }									      \
107  for (i = 0; i < 300; ++i)						      \
108    {									      \
109      x -= d;								      \
110      out << i << " " << d.to_double() << " " << x.to_double() << " " << x.to_string(SC_BIN, SC_E) << "\n"; \
111      d = d / 2;							      \
112    }									      \
113}
114
115
116static void range_to_min(ostream& out)
117{
118  RANGE_TO_MIN(T_FX_FLOAT);
119  RANGE_TO_MIN(T_FX_UFIX);
120  RANGE_TO_MIN(T_FX_FIX);
121  RANGE_TO_MIN(T_FX_FIXED);
122  RANGE_TO_MIN(T_FX_UFIXED);
123}
124
125static void range_to_max(ostream& out)
126{
127  RANGE_TO_MAX(T_FX_FLOAT);
128  RANGE_TO_MAX(T_FX_UFIX);
129  RANGE_TO_MAX(T_FX_FIX);
130  RANGE_TO_MAX(T_FX_FIXED);
131  RANGE_TO_MAX(T_FX_UFIXED);
132}
133
134static void range_min_max(ostream& out)
135{
136  RANGE_MIN_MAX(T_FX_FLOAT);
137  RANGE_MIN_MAX(T_FX_UFIX);
138  RANGE_MIN_MAX(T_FX_FIX);
139  RANGE_MIN_MAX(T_FX_FIXED);
140  RANGE_MIN_MAX(T_FX_UFIXED);
141}
142
143
144void range_fx(ostream& out)
145{
146  sc_fxtype_params fooCast(222, 111, SC_RND, SC_SAT);
147  out << "************** range_FX_TTT\n";
148  range_to_min(out);
149  range_to_max(out);
150  range_min_max(out);
151}
152
153