1 /*
2 // Copyright (c) 2018 Intel Corporation
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 */
16 
17 #include "stepwise.hpp"
18 
19 #include <cmath>
20 #include <cstddef>
21 #include <limits>
22 
23 namespace ec
24 {
25 float stepwise(const ec::StepwiseInfo& info, float input)
26 {
27     float value = info.output[0]; // if we are below the lowest
28                                   // point, we set the lowest value
29 
30     for (size_t ii = 1; ii < ec::maxStepwisePoints; ii++)
31     {
32 
33         if (std::isnan(info.reading[ii]))
34         {
35             break;
36         }
37         if (info.reading[ii] > input)
38         {
39             break;
40         }
41         value = info.output[ii];
42     }
43 
44     return value;
45 }
46 } // namespace ec