GCC Code Coverage Report

Directory: ./
File: Characterisation/DeviceCharacterisation.cpp
Date: 2022-10-15 05:10:18
Exec Total Coverage
Lines: 47 49 95.9%
Functions: 13 13 100.0%
Branches: 31 58 53.4%
Decisions: 4 8 50.0%
Line Branch Decision Exec Source
1 // Copyright 2019-2022 Cambridge Quantum Computing
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "Characterisation/DeviceCharacterisation.hpp"
16
17 #include <optional>
18
19 namespace tket {
20
21 // simple get key wrapped in std::optional
22 template <typename T>
23 44028 static std::optional<typename T::mapped_type> maybe_get(
24 const T& error_map, const typename T::key_type& key) {
25
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 44028 const auto& it = error_map.find(key);
26 88548 return (it != error_map.end()) ? std::make_optional(it->second)
27
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 88062 : std::nullopt;
28 }
29
30 // single-qubit case
31 4232 gate_error_t DeviceCharacterisation::get_error(const Node& n) const {
32
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 4232 std::optional<gate_error_t> maybe_err = maybe_get(default_node_errors_, n);
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 4232 return maybe_err ? *maybe_err : 0.;
34 }
35 2 gate_error_t DeviceCharacterisation::get_error(
36 const Node& n, const OpType& op) const {
37
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 2 std::optional<op_errors_t> maybe_dict = maybe_get(op_node_errors_, n);
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 2 if (maybe_dict) {
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 2 std::optional<gate_error_t> maybe_err = maybe_get(*maybe_dict, op);
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 2 if (maybe_err) {
41 2 return *maybe_err;
42 }
43 }
44 ✗ return get_error(n);
45 2 }
46
47 // two-qubit case
48 13544 gate_error_t DeviceCharacterisation::get_error(
49 const Architecture::Connection& link) const {
50
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 13544 std::optional<gate_error_t> maybe_err = maybe_get(default_link_errors_, link);
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 13544 return maybe_err ? *maybe_err : 0.;
52 }
53 1 gate_error_t DeviceCharacterisation::get_error(
54 const Architecture::Connection& link, const OpType& op) const {
55
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 1 std::optional<op_errors_t> maybe_dict = maybe_get(op_link_errors_, link);
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 1 if (maybe_dict) {
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 1 std::optional<gate_error_t> maybe_err = maybe_get(*maybe_dict, op);
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 1 if (maybe_err) {
59 1 return *maybe_err;
60 }
61 }
62 ✗ return get_error(link);
63 1 }
64
65 4232 readout_error_t DeviceCharacterisation::get_readout_error(const Node& n) const {
66
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 4232 std::optional<gate_error_t> maybe_err = maybe_get(default_readout_errors_, n);
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 4232 return maybe_err ? *maybe_err : 0.;
68 }
69
70 2 bool DeviceCharacterisation::operator==(
71 const DeviceCharacterisation& other) const {
72 2 return (this->default_node_errors_ == other.default_node_errors_) &&
73
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 2 (this->default_link_errors_ == other.default_link_errors_) &&
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 2 (this->default_readout_errors_ == other.default_readout_errors_) &&
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 6 (this->op_node_errors_ == other.op_node_errors_) &&
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 4 (this->op_link_errors_ == other.op_link_errors_);
77 }
78
79 9 void to_json(nlohmann::json& j, const DeviceCharacterisation& dc) {
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 9 j["def_node_errors"] = dc.default_node_errors_;
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 9 j["def_link_errors"] = dc.default_link_errors_;
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 9 j["readouts"] = dc.default_readout_errors_;
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 9 j["op_node_errors"] = dc.op_node_errors_;
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 9 j["op_link_errors"] = dc.op_link_errors_;
85 9 }
86
87 3 void from_json(const nlohmann::json& j, DeviceCharacterisation& dc) {
88 3 dc.default_node_errors_ = j.at("def_node_errors").get<avg_node_errors_t>();
89 3 dc.default_link_errors_ = j.at("def_link_errors").get<avg_link_errors_t>();
90 3 dc.default_readout_errors_ = j.at("readouts").get<avg_readout_errors_t>();
91 3 dc.op_node_errors_ = j.at("op_node_errors").get<op_node_errors_t>();
92 3 dc.op_link_errors_ = j.at("op_link_errors").get<op_link_errors_t>();
93 3 }
94
95 } // namespace tket
96