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Last change
on this file since 3045 was 3020, checked in by Takeshi Nakazato, 10 years ago |
New Development: No
JIRA Issue: Yes CAS-7193
Ready for Test: Yes
Interface Changes: Yes/No
What Interface Changed: Please list interface changes
Test Programs: List test programs
Put in Release Notes: Yes/No
Module(s): Module Names change impacts.
Description: Describe your changes here...
Fix for segmentation fault when invalid Tsys table is applied.
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File size:
1.8 KB
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| 1 | //
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| 2 | // C++ Implementation: Locator
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| 3 | //
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| 4 | // Description:
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| 5 | //
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| 6 | //
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| 7 | // Author: Takeshi Nakazato <takeshi.nakazato@nao.ac.jp>, (C) 2012
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| 8 | //
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| 9 | // Copyright: See COPYING file that comes with this distribution
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| 10 | //
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| 11 | //
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| 12 | #include <assert.h>
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| 13 | #include <iostream>
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| 14 | #include <stdexcept>
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| 15 |
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| 16 | #include "Locator.h"
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| 17 |
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| 18 | namespace asap {
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| 19 | template <class T> Locator<T>::Locator()
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| 20 | : x_(0),
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| 21 | n_(0),
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| 22 | ascending_(true),
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| 23 | copy_(false)
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| 24 | {
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| 25 | }
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| 26 |
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| 27 | template <class T> Locator<T>::Locator(T *v, unsigned int n, bool copystorage)
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| 28 | : x_(0),
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| 29 | n_(0),
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| 30 | ascending_(true),
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| 31 | copy_(false)
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| 32 | {
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| 33 | set(v, n, copystorage);
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| 34 | }
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| 35 |
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| 36 | template <class T> Locator<T>::~Locator()
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| 37 | {
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| 38 | if (copy_ && x_)
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| 39 | delete[] x_;
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| 40 | }
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| 41 |
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| 42 | template <class T> void Locator<T>::set(T *v, unsigned int n, bool copystorage)
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| 43 | {
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| 44 | if (copy_) {
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| 45 | if (!copystorage || n > n_) {
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| 46 | delete[] x_;
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| 47 | x_ = 0;
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| 48 | }
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| 49 | }
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| 50 | copy_ = copystorage;
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| 51 | n_ = n;
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| 52 | if (copy_) {
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| 53 | if (!x_)
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| 54 | x_ = new double[n_];
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| 55 | for (unsigned int i = 0; i < n_; i++)
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| 56 | x_[i] = v[i];
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| 57 | }
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| 58 | else {
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| 59 | x_ = v;
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| 60 | }
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| 61 | assert(n_ > 0);
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| 62 | if (n_ == 0) {
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| 63 | throw std::runtime_error("Input array length is 0.");
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| 64 | }
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| 65 | ascending_ = (x_[0] <= x_[n_-1]);
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| 66 | }
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| 67 |
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| 68 | template <class T> unsigned int Locator<T>::bisection(T x, unsigned int left, unsigned int right)
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| 69 | {
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| 70 | unsigned int jl = left;
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| 71 | unsigned int ju = right;
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| 72 |
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| 73 | if (ascending_) {
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| 74 | // ascending order
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| 75 | if (x <= x_[0])
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| 76 | return 0;
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| 77 | else if (x > x_[n_-1])
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| 78 | return n_;
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| 79 |
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| 80 | unsigned int jm;
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| 81 | while (ju - jl > 1) {
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| 82 | jm = (ju + jl) / 2;
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| 83 | if (x > x_[jm])
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| 84 | jl = jm;
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| 85 | else
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| 86 | ju = jm;
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| 87 | }
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| 88 | }
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| 89 | else {
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| 90 | // descending order
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| 91 | if (x >= x_[0])
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| 92 | return 0;
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| 93 | else if (x < x_[n_-1])
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| 94 | return n_;
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| 95 |
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| 96 | unsigned int jm;
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| 97 | while (ju - jl > 1) {
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| 98 | jm = (ju + jl) / 2;
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| 99 | if (x < x_[jm])
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| 100 | jl = jm;
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| 101 | else
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| 102 | ju = jm;
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| 103 | }
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| 104 | }
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| 105 |
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| 106 | return ju;
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| 107 | }
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| 108 |
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| 109 | }
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