sc_time.hh revision 12837:413a7b490b1b 
1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#ifndef __SYSTEMC_EXT_CORE_SC_TIME_HH__
31#define __SYSTEMC_EXT_CORE_SC_TIME_HH__
32
33#include <stdint.h>
34
35#include <iostream>
36
37#include "../dt/int/sc_nbdefs.hh"
38
39namespace sc_core
40{
41
42enum sc_time_unit {
43    SC_FS = 0,
44    SC_PS,
45    SC_NS,
46    SC_US,
47    SC_MS,
48    SC_SEC
49};
50
51class sc_time
52{
53  public:
54    sc_time();
55    sc_time(double, sc_time_unit);
56    sc_time(const sc_time &);
57
58    sc_time &operator = (const sc_time &);
59
60    sc_dt::uint64 value() const;
61    double to_double() const;
62    double to_seconds() const;
63    const std::string to_string() const;
64
65    bool operator == (const sc_time &) const;
66    bool operator != (const sc_time &) const;
67    bool operator < (const sc_time &) const;
68    bool operator <= (const sc_time &) const;
69    bool operator > (const sc_time &) const;
70    bool operator >= (const sc_time &) const;
71
72    sc_time &operator += (const sc_time &);
73    sc_time &operator -= (const sc_time &);
74    sc_time &operator *= (double);
75    sc_time &operator /= (double);
76
77    void print(std::ostream & =std::cout) const;
78};
79
80const sc_time operator + (const sc_time &, const sc_time &);
81const sc_time operator - (const sc_time &, const sc_time &);
82
83const sc_time operator * (const sc_time &, double);
84const sc_time operator * (double, const sc_time &);
85const sc_time operator / (const sc_time &, double);
86double operator / (const sc_time &, const sc_time &);
87
88std::ostream &operator << (std::ostream &, const sc_time &);
89
90extern const sc_time SC_ZERO_TIME;
91
92void sc_set_time_resolution(double, sc_time_unit);
93sc_time sc_get_time_resolution();
94const sc_time &sc_max_time();
95
96} // namespace sc_core
97
98#endif  //__SYSTEMC_EXT_CORE_SC_TIME_HH__
99