1/*
2 * Copyright (c) 2015, Intel Corporation
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * * Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Intel Corporation nor the names of its contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** \file
30 * \brief Data types used to represent depth quantities.
31 */
32#include "depth.h"
33#include "ue2common.h"
34
35#include <algorithm> // std::min, std::max
36
37namespace ue2 {
38
39DepthMinMax unionDepthMinMax(const DepthMinMax &a, const DepthMinMax &b) {
40 DepthMinMax rv;
41
42 if (a.min.is_unreachable()) {
43 rv.min = b.min;
44 } else if (b.min.is_unreachable()) {
45 rv.min = a.min;
46 } else {
47 rv.min = std::min(a.min, b.min);
48 }
49
50 if (a.max.is_infinite() || b.max.is_infinite()) {
51 rv.max = depth::infinity();
52 } else if (a.max.is_unreachable()) {
53 rv.max = b.max;
54 } else if (b.max.is_unreachable()) {
55 rv.max = a.max;
56 } else {
57 rv.max = std::max(a.max, b.max);
58 }
59
60 return rv;
61}
62
63} // namespace ue2
64
65#ifdef DUMP_SUPPORT
66
67#include <sstream>
68#include <string>
69
70namespace ue2 {
71
72std::string depth::str() const {
73 if (is_unreachable()) {
74 return "unr";
75 } else if (is_infinite()) {
76 return "inf";
77 }
78 std::ostringstream oss;
79 oss << val;
80 return oss.str();
81}
82
83std::string DepthMinMax::str() const {
84 std::ostringstream oss;
85 oss << "[" << min.str() << "," << max.str() << "]";
86 return oss.str();
87}
88
89} // namespace ue2
90
91#endif // DUMP_SUPPORT
92