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Last change
on this file since 2741 was 2733, checked in by Takeshi Nakazato, 12 years ago |
New Development: No
JIRA Issue: Yes CAS-4770
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...
Redefined Interpolator1D and derived classes as template class.
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File size:
971 bytes
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| [2733] | 1 | //
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| 2 | // C++ Implementation: LinearInterpolator1D
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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 "LinearInterpolator1D.h"
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| 15 |
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| 16 | namespace asap {
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| 17 |
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| 18 | template <class T, class U>
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| 19 | LinearInterpolator1D<T, U>::LinearInterpolator1D()
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| 20 | : Interpolator1D<T, U>()
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| 21 | {}
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| 22 |
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| 23 | template <class T, class U>
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| 24 | LinearInterpolator1D<T, U>::~LinearInterpolator1D()
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| 25 | {}
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| 26 |
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| 27 | template <class T, class U> U LinearInterpolator1D<T, U>::interpolate(T x)
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| 28 | {
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| 29 | assert(this->isready());
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| 30 | if (this->n_ == 1)
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| 31 | return this->y_[0];
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| 32 |
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| 33 | unsigned int i = this->locator_->locate(x);
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| 34 |
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| 35 | // do not perform extrapolation
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| 36 | if (i == 0) {
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| 37 | return this->y_[i];
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| 38 | }
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| 39 | else if (i == this->n_) {
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| 40 | return this->y_[i-1];
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| 41 | }
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| 42 |
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| 43 | // linear interpolation
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| 44 | U y = this->y_[i-1] + (this->y_[i] - this->y_[i-1]) * (x - this->x_[i-1])
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| 45 | / (this->x_[i] - this->x_[i-1]);
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| 46 | return y;
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| 47 | }
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| 48 |
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| 49 | }
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