1/*
2 * Copyright (C) 2013 The Android Open Source Project
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#ifndef LE_FX_ENGINE_DSP_CORE_BASIC_INL_H_
18#define LE_FX_ENGINE_DSP_CORE_BASIC_INL_H_
19
20#include <math.h>
21
22namespace le_fx {
23
24namespace sigmod {
25
26template <typename T>
27int SearchIndex(const T x_data[],
28                T x,
29                int start_index,
30                int end_index) {
31  int start = start_index;
32  int end = end_index;
33  while (end > start + 1) {
34    int i = (end + start) / 2;
35    if (x_data[i] > x) {
36      end = i;
37    } else {
38      start = i;
39    }
40  }
41  return start;
42}
43
44}  // namespace sigmod
45
46}  // namespace le_fx
47
48#endif  // LE_FX_ENGINE_DSP_CORE_BASIC_INL_H_
49