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Last change
on this file since 2730 was 2730, checked in by Takeshi Nakazato, 13 years ago |
New Development: No
JIRA Issue: Yes CAS-4770
Ready for Test: Yes
Interface Changes: 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...
Rewrite implementations for locator and interpolator.
Documentation (doxygen format) is added to header files.
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File size:
1007 bytes
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| 1 | //
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| 2 | // C++ Implementation: HuntLocator
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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 |
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| 14 | #include "HuntLocator.h"
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| 15 |
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| 16 | namespace asap {
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| 17 |
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| 18 | HuntLocator::HuntLocator()
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| 19 | : Locator(),
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| 20 | prev_(0)
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| 21 | {}
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| 22 |
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| 23 | HuntLocator::HuntLocator(double *v, unsigned int n, bool copystorage)
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| 24 | : Locator(v, n, copystorage),
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| 25 | prev_(0)
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| 26 | {}
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| 27 |
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| 28 | HuntLocator::~HuntLocator()
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| 29 | {}
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| 30 |
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| 31 | unsigned int HuntLocator::locate(double x)
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| 32 | {
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| 33 | if (n_ == 1)
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| 34 | return 0;
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| 35 |
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| 36 | if (ascending_) {
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| 37 | if (x <= x_[0])
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| 38 | return 0;
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| 39 | else if (x > x_[n_-1])
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| 40 | return n_;
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| 41 | }
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| 42 | else {
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| 43 | if (x > x_[0])
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| 44 | return 0;
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| 45 | else if (x <= x_[n_-1])
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| 46 | return n_;
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| 47 | }
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| 48 |
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| 49 | unsigned int jl = 0;
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| 50 | unsigned int ju = n_;
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| 51 |
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| 52 | // hunt phase
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| 53 | if (prev_ > 0 && prev_ < n_) {
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| 54 | jl = prev_;
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| 55 | hunt(x, jl, ju);
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| 56 | }
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| 57 |
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| 58 | // final bisection phase
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| 59 | unsigned int j = bisection(x, jl, ju);
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| 60 | prev_ = (j > 0) ? j - 1 : 0;
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| 61 | return j;
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| 62 | }
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| 63 |
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| 64 | }
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